My problems with wp7 version
2) Map readability is very poor. The numbers need to be bigger similar to the iPhone's map. I've attacked lvl 0 oasis's thinking they were lvl 9, and forget about looking for people to attack. Its simply too hard to make anything out.
3) Most times going into alliance chat results in the game crashing. Sure you can letter, but it makes it difficult to communicate with your alliance and takes one of the social aspects away.
4) Sometimes hitting the command button causes the game to crash. I lost 12k cats, and 40k inf because of this. I kept logging back in and trying again, but it kept happening. 6 times in total!
4) PERFORMANCE! The game starts out not too bad, but the longer you play the slower and more bogged down it gets. Even when you first start though, the simple animation of the windmill isn't smooth. Eventually it gets to the point that the game is barely playable.
Problems are all as of 3.2 to 3.3. I love this game, and have spent money, but I have quit playing now, and refuse to come back until some of these things at least are fixed.