1. Needs a higher level cap. You really can't try out some of the more interesting builds since there aren't enough points to spread amongst three different trees. Since the game is fairly easy to win, it wouldn't hurt to allow you to get more powerful, but it would be really fun to see some interesting combinations.
2. Needs a respec option. I played through three times to test out the first three builds I planned, and it really would have been nicer to be able to keep testing with one run through (especially for those of us with time constraints.) If he wanted to penalize respecing he could have allowed a respec at a cost o dropping two levels. This way you get to play through the more exciting levels again to get back up.
3. Needs more save game slots. For those of us willing to play through many times, we should at least be able to keep our different characters. It sucks to erase a max level character just to test something out.
Shmanel made a great spreadsheet of the unit types in this game. Helped me figure things out a lot.
http://spreadsheets.google.com/ccc?key=0AixHBby1dokrdEFTQ0I4dTdYQXZwei1fOGhTcFE5TkE&hl=en
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