There's no point comparing a tank's access to raise with a ranged job, because there's no way whatsoever to compare the two. Tanks do significantly less damage than DPS jobs. They have significantly more survivability. They're not even competing for the same raid slots. A single tank having access to raise would definitely create tank role balance issues. All tanks having access to raise would not (although I think such a design decision would devalue healers further).
Raise is ultimately gated by MP. Four raises is 9600 MP, and you also need to spend MP on additional spells if you want to dualcast.
I think you're actually reinforcing my point about utility. Utility is always situational. Raise is a really powerful tool, so much so that players have to sacrifice 10% of their DPS to have access to it. But what happens if you never use it? That's why you can't balance DPS against utility. Give players DPS parity, and then be as creative as you like with the utility. If there's a tool that's going to be potentially gamebreaking (invulns, raises), then just give every comp equal access to it.
PCT absolutely dominates most of the current fights due to the design of its burst, and is going to have an even more of an overwhelming advantage in FRU unless the devs wake up and do something about it. The DPS chasm that you see is between a higher and lower tier of ranged jobs. If you're willing to rectify that, we'll have a level playing field.
I'd actually like it if more DPS role balances were done similar to melee, in that you actually see trade-offs in the rankings over the weeks between more burst-orientated jobs and more consistent DPS jobs as fight durations get shorter.
I think it's interesting that your main objection to handing out Raise is that you see it as a potential DPS liability for PCT, while you're happy to encourage someone else to bring it and take on that DPS liability on your behalf. The truth is, if there is a fixed number of raises in every raid comp, then nobody needs to be taxed for having it because it no longer impacts game balance. You'll lose that free 10% DPS edge, but that needs to go away regardless.