Healer LB is required in UwU for the doom mechanic. Some used healer LB for the heal mechanic in P3S

Tank LB is required in UCoB, and used quite a bit in savage, many used it for the last line AoE in P2S

All usable aside from DPS this tier, and they have done a good job at allowing raids to see more of the fight and even clear that don't involve melee. So no they really don't need to change anything, just keep being more creative that it's not only for damage