A "summoner" in this game doesn't exist, except for groups of beastmen that are subsequently brainwashed by their primals. You wanna become brainwashed every fight?

I think you didn't pay attention to my point. Egis can be put on auto-pilot, and DOTing is the most intricate part of your job. If you have the potential to auto-pilot the most important part of your job, we will have the most unproductive players possible. Pug parties would never let summoners in.