Cool, fun concept if you're in a very active club. Here are my beefs.
1) Matchmaking. On our fourth war and finally have a group that is fighting back. Still, it's 54k to 22k and the opponent isn't bothering to leave the shield.
2) Points. It seems inconceivable that I'd ever get the top chests. It requires 12K. I am very active and have managed 8k with four hours remaining.
3) Resource drain. My biggest gripe is probably in some ways the lamest but I make no money and barely compete in the contest of mayors. My resources all go to procuring war items which is novel for now, but it will get old fast. This will be the reason I leave the game.