This is why I've said in multiple threads, Healer's can focus more on cleansing for a start, then because of the fact all the tanks have sustain the content will be changed to reflect that. I mean we already have some previous dungeons getting reworked like Copperbell Mines and Thousand Maw Totorak, but yes it will take time to get everything reworked but that's just the state of the direction. Again, we have multiple dooms coming in dungeons at this point that require cleansing when before, you were lucky to see it in something like Sunken Temple of Qarn as a stage check. Going back to the content having to challenge all tanks even with their sustain, Healer's in general should be worked more to be like Sage in that offense=healing. They would have more offensive buttons to deal more damage and be active in general, instead of just spamming dia>glare>glare>glare and being bored all day.
I'm tired of the assumption that if all tanks had sustain in general, whether it's similar to WAR or god forbid they make all types of sustain unique but at least usable, that NOTHING in the game would change at all to accomodate that. If you're worried about destroying old content, we already do that by default, try running Satasha's at any point now vs remembering how it was in SB. It was probably even more different in ARR and HW too. That's not even a valid excuse anymore but hey, at least they're trying to fix old content piece by piece so who knows where everything will be in time anyway.
Meanwhile WAR is one of the few tanks that had actual really big issues, like unable to survive tankbusters in ARR, or doing not enough damage in P8S that you have to go GNB or DRK or you're trolling. PLD has it's own issues but I don't see any of them whining about WAR. The only reason WAR gets unbalanced is DRK and rarely GNB it seems want to just try to drag WAR down when they should try to bring themselves up. So by extension, WAR gets buffs when there's actual problems that get addressed while the others don't because they don't address their own stuff enough. WAR is fun, and whether or not you like WAR, asking for nerfs ain't going to go well.
When we have to wait for the bald man to fix DRK's Living Dead by spotlighting how bad it is when he isn't even a DRK main, that's pretty gruesome.