Can't control these new summons. They should use the same control functionality as Incarnates. I don't want AI controlling my pets (should be an option that is off by default).

nah, it's said basically in the first sentence of the mod description that that's what the mod is about.
I created controllable ones before, those one's now however are not.

When added with some Feenex and Helaene class mods/core, also just some QoL mods such as "already inspected mod" and "summoning tweaks mod". It says that it can't create the adventure and resorts to the classic one, which also spawns 4 other random blank player characters in the party. Another issue is that it disables the QoL mods. I ran it with it disabled then enabled, just to check and make sure.

I'm not sure what kind of mod could be conflicting with mine since I always make sure to put a special tag on my file-names so exactly that wouldn't happen.
Unless someone else uses the same tag, but I only seen a modder with that tag once before in a different game.
"Already inspected mod" I never heard of that one though.
Could be the one conflicting since I use the "summoning tweaks mod" and various classes too when playing with friends and no one ever had problems.

I would have to check around for all the newer mods that came after my time lol