Okay... I shall begin...
Well, along with my Dawn War series, I also have a fledgling idea for another book... Not unlike the TV show Heroes, it would be about, well, superheroes. Now, as most of you know, I am technically and logically oriented, so simply saying that the having the brain at 100% won't cut it for telekinesis IMO. You need something more realistic.
My response was nanites. Ahh, the wonders of collective computing. Just as in the Vasari, they would be used, but the Vasari use their nanites for a far different purpose. Vasari Nanites would be microscopic freighters. They transport material. Such is the way in which they repair objects. Now, that is not to say that they do not have neural ones (as I certainly believe they do), but their physically based ones are far superior.
Advent Nanites would focus their space on computing ability. Currently, we use a base 2 system in computers at the basic level. Human beings use the Roman Numeric System (or at least most of us do) which is a base 10 system. In other words, the number 10 in RNS is the same as 1010. Simply put, the higher the base, the more efficient the system. Hex, if I remember right is a base 16. In the Dawn War, I have a Tridecal Code which is a base thirty. Simply put, big base=good.
Now, currently, we are designing computers on the pico scale where a single atom is doing the calculative action of a transistor which is quadrillions of times larger. These computers use a base 4 system. So, one could assume that by going down to the femto scale, one could achieve even larger bases by dealing with quarks and changing their forms.
Also, it should be noted that at this scale, you are actually storing data in a more dense form than DNA. DNA is a base 4 system but requires a dozen atoms per item. Now, since one can store the entire code of a human being in 23 macromolecules, surely femto computers would be able to store far more than that in a much, much tinier space.
Now, one of the wonders of computatively oriented nanites is that they have collective computing. This means that a single one can address problems around it and is much like a single brain cell. It can't do all that much and only sees a tiny part of the picture. However, once you get a few thousand, or a million, or a billion, or a trillion together, you start to see what these little things can actually do. Suddenly, you have a hypercomputer on your hands that will likely be semi-sentient.
Now, stick this in a human being's mind. What happens? Their IQ will shoot through the roof. I believe the cap is 200, but let's just say that doing this would send you to 300-350... Not only will the nanites be using themselves, but they can also unlock the vast untapped power of the hypercomputer that is already inside your skull (your brain).
The thing is, this is just what happens to one's intelligence. I have yet to mention the other functions of nanites...
Nanites are employed by all three cultures to repair ships, but only the Vasari truly use them on a macro scale. Others just use them for self repair. However, this also means that the nanites could just as easily be used to repair a person. This yields an increase in longevity and survivability in battle. Carrying between 1-5 trillion nanites with you would likely increase your life expectancy by 10 fold. Now, of course only a few hundred million could actually live in your blood, so what about all the others? They have to go somewhere. That somewhere would be the organ systems of the body.
This is where my second book idea comes in. In it, a group is injected with nanites by a man attempting to revive a cancelled government program. Now, each person reacts differently to the nanites and as such no two people have the same nanite grafting system.
Simply put, the way in which nanites graft is dependent on their programming and the body they are entering. Now, the Advent would desire something which would give them a couple things...
First, they want telekinesis. Seriously, who doesn't?
Next, they want telepathy.
The first is a rather difficult one to figure out. By definition, telekinesis is the manipulation of objects by altering gravity around the object. However, we do not yet know how to manipulate it. However, electromagnetism is much more conceivable and so long as Iron, Nickel, Cobalt, Samarium, or Neodymium is present, you still have influence.
Now, you may ask how can one go about turning oneself into an electromagnet with nanites. I have an answer. Your nerves are long skinny wires that follow your appendages. By grafting in a spiral around these natural wires, one could easily see how you could get an electromagnet. Also, because you have 600 nerve endings in your finger tips, you would likely control this ability with your hands.
Now the second relies on the same system but in reverse. By using the electromagnets around your nerves, you could act like a radio tower. By turning it off, you could "listen in" on someone else's thoughts by decoding the magnetic fields which go out indefinitely from a source. Surely by this time the brain would be fully mapped and the nanites inside of you would have all the basic neural configurations programmed in allowing for you to decrypt otherwise incomprehensible garbage.
Inversely, you could be a broadcasting station and broadcast interference to mess with the other ship's crew's heads. We already know that a certain set of frequencies will slow down brain function while others will stimulate it. A few thousand years from now, you can bet that they know what frequency does what. Just have every crew member broadcast what you want to a target ship and suddenly, that crew is disabled.
Also, this explains why women are superior at the usage of PsiTech. Men only use half of their prefrontal cortex at a time whereas women can use both. Now for those of you who don't know what it is, that is the part of the brain that allows for conscious thought. Nanites in the body would likely be controlled here as it would allow you the best usage of them. For this reason, women would be twice as efficient with their PsiTech nanites and thus would be more valued.
That said, men would still play a vital role in society. They would form the majority of the crews in all but the most elite PsiTech ships (like capitals). Now, of course since capitals are floating countries (they are thousands of kilometers in length after all), they would have men on board for procreative purposes.
I also believe that even on capitals, men would still make up much of the crew. I tend to believe that the PsiTech masters would be in a locked down series of chambers in the ship, cut off from the outside world to allow full use of their abilities. This means that these areas would be female dominated, but all other areas would likely have equal amounts of men and women.
On a related note, I believe the Advent could easily be run by a woman. Unlike the Vasari which have their memories implanted, the Unity would be just that. It would be a neural internet, connecting all minds. For this reason, no thought any member has ever really dies, it just gets sent to someone else when the original "owner" dies. This means that the thoughts the Unity had when it left are still fresh in its collective mind. This means that the Vasari could very easily be run by a woman. After all, there is a phrase, "Hell hath no fury like a woman scorned." Men become angry but soon get over it. Women dwell on issues for very long times and will hold grudges sometimes indefinitely...