1) 100p map is not big enough?
2) This is a casual game with a long-term/progressive style. I like it. Why make it shorter? Many players aren't online all the time. The game play relies on being able to defend and redirect troops
3) Build your units closer to the front line then? (remember to upgrade territory that you conquer)
4) Resources could be explained better in the tutorial, I agree, but the tutorial should not be too complex or long. It would deter people from playing on if the tutorial is 2hr long. Also, there is FAQ added in the newspaper recently, that links here to a FAQ on the forum in the help section. There new players will find lots and lots of info.
5) They are called rare materials for a reason - they are rare. Buy them on the market if available or set a purchase order.
6) I don't think more graphics will help the game play, I already think there are too many now, with the coalition flags and waiting/order bar being added. I don't wanna see it get clogged even more. You can click on your unit and see what health it is at by looking at the morale.