Why All the One-Button Mechanics?

[Shurrikhan]

what if jump isn't up? shields weren't put up in time? manipulation is on cd cuz i fat fingered it?

Every single one of those things apply also to Arm's Length and Surecast. Those skills that are already parts of our kit just don't also require an extra button of (arguably) bloat.

mistakes happen and this allows everyone a "get out of jail free" card?

But, again, is that a good thing? Is a "your mistake doesn't matter (as long as you use this otherwise useless thing)" good design?