I'm not focused on potency buffs, but I also want to contribute something when playing MCH. It shouldn't be considered selfish when picking a job, that contributes less DMG than a melee - and also provides no buffs for the raidgroup.
The raid mentality I've known for years wants as much DPS as possible. The more DPS or buffs you provide, the higher your DMG output will be. In conclusion that means, less mechanics to do = less healing needed = less stress overall.
I'll be raiding this tier again via PF and I'll make my own opinion wether I'll be excluded or asked to swap to BRD or DNC.
I also don't see any reason why both issues cannot coexist and be questioned. Job rotations are important as well as job/role identity.