Please reduce the CD and duration of Arm's Length.

[VenKitsune]

Why would it need a cooldown reduction?

the shadowbringer fights are DESIGNED with the cooldown in mind - Do you know what would happen if they reduced the cooldown? They'd increase the ammount of knockback skills so the only thing that would change is that it'd be pressed more which would be annoying.
Pre-shadowbringers only a few jobs had a knockback immunity - Namely PLD and WAR and maybe a few others i cant think of right now. This means that knockback prevention isn't needed for pre-5.0 fights, and the post 5.0 fights are designed with that availability of it in mind which means that on fights like E4S you actually have to use it tactically in P1 to make sure its up for the first blue in P2, for example, or just do the mechanic correctly.

It's also worth noting that if they reduced the cooldown then they'd also need to reduce the cooldown of surecast - Both surecast and arms length have aditional abilities tied to them in the form of guaranteed interupt-less casts and a slow-on-strike. If the duration was nerfed to 3-4 seconds as you say...That'd mean that Surecast wouldn't even last a single spell cast in the case of some jobs like blackmage's flare.

Useless thread is useless.