Since Bard is kinda supporty, I always thought it'd be neat if their LB gave a party-wide Brave or Faith or Haste or something along those lines. Healing LB on a support role makes some sense, but it's so rarely called for from a Bard that by-and-large it just feels useless.

I've only ever seen maybe 2 situations where the Bard could have saved a wipe with an LB3. However, in both cases the Bard didn't use it because they weren't used to LBing and either a: assumed someone else had already used it (i.e. they paid no attention to the LB gauge because of how infrequently Bards actually need to LB) or b: they didn't have LB on their hotkeys (again, because of how infrequently Bards actually need to LB).