Vision of Mana is the latest mainline game of the Mana series after 18 years (Dawn of Mana/2006). So franchises that don’t get much attention anymore could come back. What franchise that have ended or don’t get much attention from their publishers would you like to see come back?
Something in the Chrono Trigger canon.
Unfortunately, I dont think it could happen anymore as all the people that made the original have mostly left Square to retire or start their own companies.