I would like to see what happened to the folks at that hill with the Phoenix on top of it. I can't remember what it's called. Edit: FORT CONDOR!!!!!!
I'd also like to see if Rocket Town ever finds a way to renew their exploration of space and see if someone built a friggin bridge to Wutai instead of having to travel to the other end of the continent just to get to the city.

Lastly, I'd like maybe see some more of Zangan's story explained tied in with Tifa's if there's anything else to tell. He wasn't very important in the game but Tifa's past is never really explained in too much detail.

Also, will anyone live dare in Nibelheim's Mansion? Only time will tell...