Just sounds like the return of TP to me. I'd sooner push to have SE just remove the MP gauge for jobs that don't utilize it. Also considering that SE loves to slap CDs on abilities that already use another resource that limits its usage, I'd really not want them to have yet another gauge to do this with.

I look at the MP bar as a caster resource, though jobs like DRK do utilize it in a way that you describe. However, with ShB I feel DRK has its resources backwards where Edge/Flood should be on CD while abilities like Abyssal Drain and Unleash should use MP. TBH, I think the devs are a bit conflicted with how resources should be used, and/or are still figuring out how to properly implement the job gauges. No need to add to their confusion with TP and MP gauges for the melees.