I liked the Mog Tablets in FF11. I didn't see them as a tactic for a dying game, although they may have been. I really enjoyed them. It would be cool if SE put something similar in FF14.

Increased speed.
Increased chance of synthing.
Increased chance of melding.
Increased drop rate.
HP/MP regen+.
Immunity to Ifrits Eruptions... just an idea...

Maybe there are other/better ones.