I would love to play a game with a medium to large adventuring party, so 5-8, where you are running something like 2 control mages, 1 support mage, 1 buff mage, 1 debuff mage, 1 damage mage, 1 affliction/DoT mage, and one frontline tank mage.
For my purposes the battles in the Owlcat games are too short, and they don't have truly interesting buffs/debuffs or afflictions/DoTs and also I'm not a fan of classes even if they kludge them with multi-classing, prestige classing, and archtypes. At that point just let us take the 4-5 building blocks of each class and mash them up any way we like.
A key issue with these games, aside from character creation, is that you pre-buff before battles, drop a few debuffs, maybe, and then smash to win in like 5 rounds of actual battle. Also you can't really stack afflictions/dots/debuffs in a sort of spiraling way. Always wanted to play mages who weren't just high dps.
Also all DnD/PF buff spells are lame except Haste. +1 size, +2 DEX, etc.
I'd really like a native to pc rpg system instead of adapting tabletop which is very illogical since the limitations and benefits of pc and tabletop are extremely different. I know it is mostly a matter of marketing potential.