Summoner Early Post-Launch Feedback at level 80

[Exodus-E]

1. Remove or alter egis, remove DoTs.

I'm completely against removing them, since they're integral to this game's lore.
So "altering" will have to do, I guess.

2. Emphasize the trance and primal-based rotation from a very low level.

I think they're fine the way they are, level-wise.
Maybe post-Lv.60 would do it.

5. Fixed demis that aren't a pain to work with!

On that, we can agree.
They'd simply need to alter Dreadwyrm Trance so it works just like Firebird Trance (ie. temporarily replacing Ruin III + Outburst and integrating Demi-Bahamut into it).

6. Temporary one-shot summons!

I mean...that's more or less how Demi-Primals currently work.
They just need to further emphasize that particular aspect of them.
Like say, using their respective Enkindles immediately on entry/exit (similar to MCH's turret).

7. Basically a ground up rework of the class to focus on demi primals and things that can make the summoner feel more thematically like a summoner, with all mechanics designed from the ground up to actually focus on and fit with this thematic style so the class feels thematic.

And this is the point where I completely disagree with you.
Each FF game has its own "take" on certain jobs and stuff.
Otherwise, Scholar wouldn't get fairies, Dark Knight would be sacrificing its HP for certain attacks (and not being a tank), etc...