Arcanist and Summoner: a possible solution

[Dahlinea]

As far as the rest is concerned, I feel like forcing the Ruin III vs. Ruin II dynamic on every Primal summon might not be the best idea. I understand you are putting it there to replicate the "damage vs. mobility" situation, but this once again feels like porting onto the new SMN things that worked with the old one.

That's not my reason to "force it" into new SMN. My thing is that I absolutely hate the idea that I'm restricted to use casted spell a certain number of times and then have to move to next summon and that one will have the boring insta cast one. You see? We don't have freedom over our spells like before. That's what I absolutely hate about this new SMN. Why am I forced to change from casted spell to a insta cast spell when it's not needed? And since we're forced into this cycle of limited number of spells per summon without casted or insta cast alternatives they probably decided to give to 2/3 summons only insta cast spells to "alleviate the pressure", which resulted into what it is now. That's the only reason I put that line of changes for Gemshine spells.
Another thing that I don't agree with in new SMN is the summons not producing any effect that would benefit SMN somehow, like you used to get Further Ruin stacks to increase damage during Bahamut. That's why I proposed the Aetherflow change.

The rest I agree. Summon skills definitely needs to come from the summons and not the summoner.