Have inky tentacles pull you into the ground like they do when your IA partner goes through a portal. Would be fun, I'd buy it or even better do IA achieves for it.
I’d really like to see some class-themed animations. We got the icy one in the All-Maker crates, there was a Necro-y one as well as the Dark Anchor, and the new DB is a nice NB-esque one. We could also have some stuff like summoning and descending into a volcano, ascending in a beam of light, vanishing in a bolt of lightning, getting sucked through a portal with tentacles, etc. to theme some to the other classes. I’d snap those up in a heartbeat.
As long as they’re not bound to classes like the class sets though… I’m still salty about the fact that my Necro can’t wear pants with 3D pockets because only Nightblades are allowed to have pockets.