Melee DPS and MP

[Brightshadow]

Honestly the easiest solution to MP not fitting physical jobs is to rename it to AP for action points and voila everyone can use it alongside their unique resource.

[Satarn]

Honestly the easiest solution to MP not fitting physical jobs is to rename it to AP for action points and voila everyone can use it alongside their unique resource.

Good idea, but I think "Tactical Points" aka "TP" sounds cooler... oh wait.

On a serious note, the reason jobs use resources other than MP is that it allows for different resource "characteristics". You've already brought up the problem of MP starting at full out of combat, but there's more issues, like passive regeneration and being affected by eathers. While these can be solved with special stances like in case of BLM and old DRK, it requires to add another button or mechanic to a job, just to do something that's already better accomplished with a separate resource.

Furthermore, you mention "screen clutter" likely referring to job gauges, but removing separate resource gauges goes directly against the reason for those gauges being implemented in the first place - to have a separate, more visible piece of UI to represent your job's mechanics.
If their look bothers you so much, you can use the simplified mode, which is more similar to regular HP/MP bars, as well as resize and move them around to wherever they don't interfere.