In my experience? The bard is usually able to keep the whole party topped up in between short rests. Partly because the party insists on resting as soon as the bard runs out of bardic inspiration, unless there's a doom clock. (And you can't use a doom clock in every single session or it gets old.)But the bards Temp HP do not replenish she has to use the ability again to replenish it, the cleric's replenish every round for a full minute.
I say this as someone with a player in two regular groups who refuses to play anything but glamour bards. I have seen them in action a LOT.
Oops, yes, I meant to mention that too but got distracted by someone calling me to dinner just as I posted.Edit: One thing I did not consider. The Glamour Bard's ability is a bonus action. That IS actually a significant improvement and often overlooked.