Not sure if this is going to work, buuuuuuut here goes.
You have all 15 mainline Final Fantasy games, even the online ones. Spinoffs not included.
You can only do one thing with each one. ( so you can't go- FFXII, FF XII, FFXII, FFXII etc with all of them )
- Improve a Final Fantasy
- Dump a Final Fantasy
- Keep a Final Fantasy the same ( no change )
- Give a Final Fantasy a new soundtrack
- Give a Final Fantasy a new protag or villian
- Give a Final Fantasy a animated show ( like the Persona games )
- Change a battle system/ LVL up system
- Make a Final Fantasy easier or harder
- Make a sequel/ spinoff/ another spinoff
- Give a new ending or opening
- Would remove the Final Fantasy title ( What you think would work best without the FF name attached to it )
- Change a plot-twist
- Would remove your memories around it so you can play it again with a fresh mind
- Would change the MC into a fluffy lazy cat.
- Would change/ improve a dungeon or final dungeon.
Have fun ! ( will put up own replies later )