From job guide.
Physical ranged DPS attack foes from a distance. They excel at inflicting sustained damage, and also provide support for companions.
Bolded. This part bothers me the most because it fits BRD only, not MCH.

The only thing that MCH has is Dismantle and Hypercharge. Not looking at cross role because BRD has them too.
However, even melees have similar abilities to Hypercharge, they can provide TP and casters can transfer MP. NIN manipulates enmity.
My point is, most melees have utilities. MCH is not bringing anything extra like BRD does. So don't put them on par with BRD.

If they won't make MCH support then they should make them damage focused.