I think fleet footwork is boring, and I know we can find a more fun alternative.

Fleet footwork gives you a barely noticeable heal and a decent speed boost that is still far from satisfying. Sure, it's not a bad rune, it does its job, but it is just not fun or engaging. Compare it to other runes like lethal tempo, klepto, etc., and it just isn't exciting enough. The only champs that use it are long ranged marksmen like Jhin and Caitlyn and they just take it cause it's pretty much all they got atm. Besides them, I think Corki uses it and that's like it. I literally can't think of another champion that uses this rune as their main keystone. It's just meh, and the reason it's like that is because it tries to do two things. Maybe if it was more specific it would be better.

Maybe it could increase damage of stacking passives like Caitlyn headshot for example. A ton of champs have stacking abilities, it would be built a lot more often if it did that and still support the champions it currently supports. Or maybe it could give a ramping amount of movement speed with each subsequent attack and move. Then it would be able to keep the same fleet footwork name.

Regardless,

TLDR; rework fleet footwork, it's a boring rune and no one uses it.