The distinction between 'physical ranged' and 'magical ranged' is arbitrary and only exists because casters feel that they should by rights do more damage than more 'support-focused' bard/dancer types. Truth is, most players prefer to play dps at range, which is reflected in the total number of ranged jobs. I think that given the option, the overwhelming majority of groups would switch to three ranged players if they could, be they physical ranged or magical ranged, similar to how we would naturally add a fifth dps if mechanics and buffs made it advantageous to do so. And two of those slots are guaranteed anyways.

I think it's sensible for all dps jobs to do very similar rdps where possible. But they really should completely eliminate the physical/magical subdivision and give two slots to melee, and two to ranged.