Just my 2 cents...but leveling up is way too quick. Instead of feeling like you are working towards that next level, you feel like you cruise through just to get to level 4. Experience is very high and goes to every character even if they are not in the party. After about an hour of game time I am level 4 and spend the rest of the time maxed out. Nerfing EXP and making it so only active characters get XP is a good start. Especially if the level limit for the game is going to be lower than 20.
