I figure we could get some good ideas going here.
1) More Multiplayer/online innovation.
The FPS genre is really pushing into new territory with meta-MMOs like Destiny (which is technically an RPG). We had some good innovation with the Souls series but its time to take it a bit further. RPGs should be the vanguard of new online interactions. After all, RPGs are derived from tabletop games where multiplayer was the original draw.
2) More immersive open worlds.
Skyrim was cool and all, but in the end it still did feel like a big empty world full of NPCs and scripted events. There has to be something more dynamic, more of a sandbox.
3) Small or Medium sized open worlds with tons of detail.
If RPGs do continue on with the scripted event type gameplay, it would be cooler to have a smaller open world thats packed to the brim with details: quests, items, npcs, etc. My dream setting would be an RPG set in a Midgar-esque city with so much detail that it would be near impossible to experience it all.
4) Crossing the boundary between actual animation and 3d character models.
We came pretty close last gen with cel shading in anime-styled games. Can't wait to see what next-gen hardware will be able to do.
5) New battle systems.
I know people are sick of turn based, but I'm sick of the mindless hack and slash. I'll just be happy with combat systems that don't have me pressing X to win for the first 5+ hours.
6) Better storylines & Writing.
FFS let the surprise godly-final-boss trope fucking die already. Goddamn it Final Fantasy. They even threw that shit in Mass Effect 3. LET IT END. I want smaller-scale stories in general, more personal interactions that can drive emotions better than the typical he save-the-world quest.
7) Better Voice Acting.
If my other video games don't sound like a low budget saturday morning anime dub, my RPGs shouldn't either.
8) New Settings/background.
I'll pretty much take anything over Medieval Fantasy and (cliched) Science-Fiction at this point.