I would love a FFIX "Trance" style limit break system over what we have currently. What we have currently isn't engaging at all, it's a fire and forget button.

Tanks don't use theirs unless there's a dedicated group wipe mechanic

Healers rarely get to use theirs unless sh!t has hit the fan.

Ranged DPS don't use theirs on bosses.

This is why I loved the concept of the Ungarmax exploit, it gave healers a meaningful group buff limit break. Hell, they could even make healer LB 1 or LB 2 a group buff and make the LB3 the raise, because LB1 and LB2 on healers (as well as tanks) is effectively pointless.