Make the game exciting again, the new areas needs to be open world without any loading screen to make it feel like an adventure, remove the skill sync in low level content nobody cares if its unbalanced everything dies quickly already, stop adding jobs and add more depth to the ones we currently have like skill trees, nobody cares there's a meta build having ways to experiment is fun anyway, return to making Job Quests so jobs can have an identity, add job rewards similar to alliance quests so we can have reasons to level other jobs other than just playing the same with a different weapon, add Pets jobs again there are not excuses that PS3 era could have them and we can't now.
So many things that can be done and we're still getting the same game for 10 years now but worse, no wonder the game keeps dying.