I could be reading ur skills wrong but this feels like insane button bloat to me and I honestly don't know where I'd put everything on my hotbar. I do agree a dot class for a summoner feels weird and the gauges being locked behind each other feel unnatural and that could do some reworking but adding these many egis/summons feels overloaded at least to me.

I would like to see more summons like bahamut though where we start to get a rotation going for them. I'll use ur bahamut/Odin/Alexander but once you've gone through two dreadwyrm trances for bahamut you'll get a "buff" for 5-10mins roughly saying if u go through just one dreadwyrm trance you can summon Odin who does less damage but it'll still a powerful summon and the same for Alexander and then again for bahamut.

Also I think an easy fix for egis not responded to skills u tell them to do would be to make their basic skill just an auto attack and the skill u want them to do would become nearly instant.