There's "hope" for a new ff mmo since Yoship wants to make another one before he ends his game career. Looking at the quality of game content since shadowbringers, but specially since endwalker I'm not sure Yoship's the right person for it. If square enix was smart they would be developing their new ff mmo right now and promising to transfer FFXIV characters, minions, mounts, etc into the new one. That way all you would lose would be the overworld and locations. But you'd be gaining a far better battle system, game-server infrastructure, glamour system more similar to WoW's; and just the wholesale removal of all these FFXIV limitations the game is famous for, like the lack of character customization options.
My question to the forum community is; if all your glamours, minions, and mounts were transferred to a new FF mmo, would you be fine with square enix dropping FFXIV?