1. The camera is too stiff. A little accelaration at the beginning and end of camera movements would give the game a more elegant feel. An example of this being well done is the game Darwinia (also Multiwinia).
I wouldn't mind this change, but I don't mind the camera at all how it is - I find it effective and well integrated (just IMO).
2. Tab should move the cursor between text fields.
3. In the password text field, tab should not produce visible text (for me it shows a box with an X in it).
4. The text in the password text field should be masked.
These are known issues stardock has acknowledged (and were in the patch notes for Beta 2b as well). Hopefully it'll be integrated for Beta 3. I feel awkward when I show friends the game and don't want them to see my pass, haha.