No it's not hard to balance.
"Hey heres a replay of this combinationg owning really really hard."
It's looked over, decided whether the person is just crying that they lost or if it's really imbalanced. If it's imbalanced, one of the two, or both skills/abilties, get nerfed, whichever way will effect other builds that use the skills least.
If it turns out they're they where nerfed too much, then noe of em gets buffed in between how they where before.. GW did this with 900 or so skills, not just 80(well, more than 80 since items)
Not to mention, that combination would have to be compared to the combinations of other demigods. What happens with the Rook and Regulas work together in lane, what about the Torchbearer and Unclean Beast? What if one is built one way, another way. Not saying it should be RPS, i'm saying there should be equally powerful combinations both WITHIN each demigod, and when two work together, or three together. Some demigod combinations might be really powerful with 3 Demigods, but 3 demigods in a lane with 3 lanes means the other 2 lanes would only have 1 person each. But on a 2 lane map if there is such a thing, they'd be better.
I'm not saying how skills work together across Demigods should be huge. Maybe they SHOULD, maybe they shouldn't. There should be skills for your own Demigod that work together very well, and also Benefits allies. But this is a team game, and synergies between the Demigods would enhance that, in my opinion.
If the response to having lots of synergistic skills, both obvious and not(and i'm not talking you have one skill that does, say, a lightning strike, and then another skill buffs that to make it chain lightning. Also, not like diablo2 1.10+ where skills buff each other for each point. I'm talking about skills "naturally" working together like how the cards you put in your Magic: The Gathering deck work together.) is "will be hard to balance" then the game will have less depth when it comes to the Demigods.. at least in my opinion.
*shrugs* I hopes that's part of why there is a 4-5 month beta. Not like the game can't be patched after release too.
Hey innociv a little late on the ball:
priest (i.e. fat guy on floating chair)
http://forums.demigodthegame.com/322644
I pointed this out days ago.
I didn't read it so i'm first.