I have owned the game for about two weeks now and have been playing it quite a bit in single player mode, mostly going through the scenarios and attempting one World War. The following is a list of my observations, both likes and dislikes.
Pros (my opinion only):
Bug Free!
Pretty maps and units
Great animations (especially the bombing runs)
Turn Based
Slick interface
Simple to learn and play
Cons (my opinion only):
Only two sides with the exact same units (just different pics/animations)
The text is poorly written, should have been run by a proofreader.
Terrain has no effect on combat other than movement restriction
No fog of war
I really do enjoy the game and have been playing it pretty much exclusively over the last couple of weeks. There is definitely some deep gameplay to be had here, but I can see where this game probably shines more when playing a human opponent...something I haven't had the pleasure of trying yet. However, there are things I wish had been included that would make it more enjoyable to me.
Wishes:
Terrain that affects firing range and line of sight.
Air Units/Anti-aircraft
Different types of units for each side....or additional sides. (this is probably my biggest complaint as there is absolutely no strategic difference to which side you play)
Subs
I understand the design decisions that went into the game. The fact that there is no fog of war and both sides are the same makes it much more like chess than anything else; which is not really a bad thing. I also know the developers have gone on record as saying that they didn't want to remake M.A.X., but darn it...I wish they had.

There are so many similarities between the two games, yet they are vastly different in scope and design. I STILL have M.A.X. on my harddrive. (Please, somebody, anybody...remake this game. lol)
Anyway, I also like the fact that the games are limited in length based on the production limits of the cities. The concept of secret allies and guerilla forces is pretty cool and seems to work well within the game. I enjoy it and will continue to play it.
P.S. I hope the developers continue to release new content, whether it be additional scenarios, new maps, new units, or even a completey different side to play (as long as it's balanced).