I'm still for 5e. The build I actually want to play in Pathfinder is a Beastmorph Vivisectionist Alchemist/Synthesist Summoner goblin. Attack spam(Natural Attacks are more cost effective once you have two or more because it's one item), so if Beastmorph and Vivisectionist don't work together it'll be Beastmorph that gets dropped. Might swap the Alchemist side for some Brawler or Warpriest setup for feats and guaranteed damage, but the level split hurts this quite a bit.
The point is, the setup I want to use for PF is prone to needing significant optimization to properly function and uses some really nasty stuff to get that function. Meanwhile, 5e really just makes me liable to go for a silly layout, rather than an optimal one, like a supermount Mood Druid being the mount, or a Sorcadin build that focuses on being hard to put down more than anything else. If I want to optimize, Rogue with Magic Initiate can use True Strike to guarantee a second-turn Sneak Attack, while Find Familiar nets access to another Advantage generator.