I kinda wish Bards had a different limit break.

[Themis]

snip

I'd like to think that the main reason for putting Archer and Bard onto the healing one was to prevent an imbalance. Archer/Bard is the only physical ranged role currently, and having a unique LB would make it far more attractive that it already is, especially if it has a strong effect.

I can see Bard still retaining the healer limit break if a physical ranged LB was added along with Musketeer (or other similar role). The background information for it allows Bard to fit the healer LB quite well:

In time, their impassioned songs came to hold sway over the hearts of men, inspiring their comrades to great feats and granting peace unto those who lay upon the precipice of death.

If you wanted to equate "peace" with "not dying any more".

[Kiyouma]

Uses healing LB, doesn't even have a single healing spell.