My first impressions:
*I found it too easy for rebels to take US cities untill I actually took one and a lot of protesters appeared. I liked this!
*Should it be so easy to make peace with Canada and Mexico? Made peace with them to make the rebellion/ war against USA easier
*Interesting that Bush launced nukes against his former cities eventhough the population is still "American"...
*I like the variation of units here, so far they seem well done
*Entries in civilopedia should be looked at. Got often that message about text string missing when calculating battles
*Speaking of battles, the winning percentage chance is not calulated, only strength vs. strength.
*The T-62 tank ( I think, the strongest one that rebels can build) has no animation at all in battles (units it's fighting, also have no animation
*The rebels have no contact with Zapastia (or how it's written, am at work). In these modern times, they should have contact eventhough no actual units close to one of the borders.