Yeah but MCH is more than just a "gunner". Think of Edgar and Prompto's "Tools". Just like how DRG's story follows story threads of Nidhogg's aftermath, MCH's could follow Omega's, and we could maybe uncover and reverse engineer some of that Peripheral Synthesis stuff and generate large auto-crossbows, chainsaws, and drills as oGCDs. Or summon a floating Omega core that does a Delta Attack or Wave Cannon.

How about a "stance" called Omega Protocol, where your shots are replaced with Wave Cannon, Atomic Lasers, Homing Missiles, etc. MCH should be more than a gunner and should use other kinds of armaments and machines.