When I first unlocked Summoner years ago I thought, oh cool spirits. I bet they will be useful until I get all my avatars. A short time later I found out they were more expensive and fairly useless. Still I wish I could do something with them. So how would you alter spirits to make them useful in the game?

My suggestions:

1) Lower the cost for them being out.

2) Have control over their casting (Even if it is a general control of attack, buff, or debuff)

3) Tier V spells. If the puppet can get it I think we can as well. They are pure elements after all.