The one thing I would consider as a developer is allowing the Summoners a high level skill to unleash the primal currently being used. Of course it would be very brief, go on a lengthy cooldown, and not be some kind of "I win" button. Just an awesome looking spell where the primal pops out, does something flashy, and leaves. Anything more than that would be asking a bit much. Do tell me I'm silly if this is already a thing.