I personally love the single target rotation for Mch, prolly my favorite rotation of all jobs so far that ive played in depth. Still have issues with it though, the damage takes a massive nose dive after doing your brust, its basic combo very much needs a potency increase. Now its AoE rotation on the other hand is prolly one of worst... massive cluster fuck with hardly any skills collaborating with eachother, for starters 100% Autocrossbow needs to have same oGCD charge as Heat Blast/Blazing Shot and Flamethrower a potency increase to make it worth using. Beyond that Flamethrower(needs gauge building) and Bio Blaster(doesnt work with reassemble) just need a flat out reworks, along with some means of AoE with Battery Gauge, either AoE atks on Queen or an entirely different automaton.