fastest/most mobile class

Recoil doesn't move you as fast as FJ, but it's also a lot less limiting. No pot lag, usable at any time, usable multiple times in midair, and a nice amount of damage that can be used as a finisher.

I don't see how it's hard to move short distances with Recoil. Use it while you're standing on the ground.

But the problem with that is Recoil will have problems on small 'floating' platforms. You cannot expect to short-hop and ascend if you're on ground as a Corsair, but descending is definitely doable. Either that, both methods have their downfalls and advantages:

FJ pros:
-Faster
-Can hop on air or on land and the distance would be rather long
-Easier to short hop (durind mid-air only)

Recoil pros:
-Less pot lag in comparison to FJ
-Does damage
-Multiple uses in mid-air in conjunction with Float

That's all I can see. As for cons, no need to list that out.