More iteration on the combat would be good; Limit Breaks not being missable is my #1 request. I really did not like the combat in Remake and I was glad that they smoothed out a lot of the rough edges for me in Rebirth.
The soundtrack for Rebirth was an all-timer, too, so it'd be great if they kept that energy going.
Ugh, the only thing I hate more than a few people I regularly talk with still using Messenger is having to deal with the desktop client. Now this 🙄
I moved to a web browser but I can't even get push notifications working.