My complaint:
This has been going on too long now and getting very bored of it. Arena games, why is it when you get passed level 5 it becomes very difficult to win without using all if the spells and using your crystals to complete your game? I have just had a player 120 flock power higher than mine! Always happening, not fair! My flock power seems to go up and down randomly, why? I have also had issues with the game ending before I’ve used all my birds. Invincible pigs, all of the above complaints are also very relevant.
Suggested solution:
Make the games fair, it's a simple game to fill in down time. Take note of the previous complaints and get the peccidillos ironed out.