MNK: Something, anything, that reworks Greased Lightning. I like the idea of each stack falling off one by one.

But other options can be:
- Increasing the duration
- An instacast skill that refills the duration (with appropriate CD)
- A skill that just gives you GL3.

Other things for monk:
- A new attack. Anything from Sabin's repertoire in FF6. (Let me Suplex a Train!)