Red Mages need some love

[Mhaeric]

What you mean? if you have no proc you should fire off impact anyway

If Impactful has <2.5 or so seconds remaining (effectively 3 since we can't see fractions of seconds remaining) then you won't be able to get the cast off in time before the proc drops. Currently we can cast Jolt II, Verfire, or Verstone instead to account for this if we know we won't have time, but if Jolt and Impact become a single button then if we don't have either Verfire or Verstone procced we lose that option and would have to either wait that up to 3 seconds before being able to cast Jolt or resort to casting Vercure.

It's not likely to happen if casting Impact properly, since you'd need to get 100% procs for ~25s and miss casting it at the ~8s remaining mark, but it does introduce that bit of potential clunkiness.