I'd be more okay with bard if there was also a ranger class instead.

Then they could make bard more "support" while archers could also have the option of going as a dedicated DD (ranger). I'm sure this is coming eventually, though. I've used the bard LB3 a few times on some bad ifirit runs. It didn't save the raid, though. They all resulted in wipes regardless. The "rez animation" just takes way too long for it to be a successful recovery.