It'd be really nice to be able to replay levels before you beat the game. Since you probably won't remember which levels have hard-to-get enemies (that need a certain type of character to reach them) by then anyway!
I'm thinking from the comments some people don't understand that you can (and need to) craft weapons and armor: Click the plus under the equipment after selecting a unit in battle to make items. The "little dress up"map screen option is just to show what they'll look like with certain items (and see item stats outside of a mission).
You can easily beat most levels in about 20 seconds by immediately going after the enemies buildings. There's no reason to bother with the neutral ones.
What does "-You will get 1/2 AP from your Active Skill. But you always get full AP." in the community mod mean? Anyway, it keeps getting better and better!