Making Jobs feel complete by lv 70 is an idea I had not primarily due to balance for Ultimate content, but more for the overall enjoyment of jobs going forward. if the next expac is going to give us lv 81-90, then I think that lv 70 would be a good "middle ground" for most jobs to feel complete so to speak. The movement of Missionary would indeed help the ultimate content, but my primary goal for moving skills around would be more for the leveling and synced content experiences.

I can see your point about lv 60 synced content, and I do agree that DRK shouldn't become overpowered for people who enjoy that niche (I LOVE Dun Scaith btw, didn't know theres a community out there who does it min ilv, that's hype).
I am just asking for Dark Missionary to be introduced early so that new players can start getting used to looking for moments to mitigate raidwide damage at an earlier level, thus upping their game sense. perhaps at lv 58 it would be on a 120 or 180 sec cooldown, and then at lv 76 it gets a trait to become 90 sec how it is now? this way it will give DRK the opportunity to mitigate the most important attacks while not being too spammable for the content at that tier.

As for the squishy part, I should have elaborated a bit more. When I said that DRK felt squishy compared to PLD, I was referring to the context of doing medium to big pulls in lv 40-60 dungeon content, not so much for bosses.

When running lv 40-60 content, PLD can deal effective AOE damage while mitigating damage taken through its passive block. DRK, however, must give up doing said effective aoe damage in favor of single target sustain due to the lack of passive block. this isn't much of a problem once you get Abyssal Drain, but there are moments where DRK could use the extra damage and mana from Stalwart to help clear the big mobs faster. 1-2-3 single target + flood is effective, but could be better with stalwart in the mix, similar to PLD using TE + Prom + CoS.

As for dungeon bosses, trials, and normal raids, you are correct in that Souleater is indeed effective sustain in the long run, and there isn't much of a problem in that department, but I do feel that prior to both AD and TBN, DRK does feel somewhat lacking in the defence, which it should make up for with more offence IMO, since giving it TBN too early would completely destroy the balance to an almost laughable degree.