Its kinda weird with MCH,
there used to be time (was it end of Stormblood?) when MCH was part of speed-run composition (it had to do with that legacy piercing-buff, that DRG used to have).

I'm not saying whether that is right or wrong. But I would feel that MCH - as a selfish DPS - should be just slightly below the melee dps and slightly above SMN/RDM/DNC/BRD.

Why it is not I don't know, supposedly SE is realy strugling with its design.