Return of content with shelf life is good, this is granted (An MMO should expect this as a bare minimum, not celebrate it).. But how long is it really going to be before people get sick and tired of that same formula, where they realize it's nothing new fundamentally, bar the difference of it being a new coat of paint with some new naming conventions.. Btw guys, look at our lovely new deep dungeon, you may find rare and notorious monsters loaming around which are incredibly difficult.. So you may want to avoid attacking them if you aren't a full party (Which many people were doing anyway with monsters like Anzu, Wolf, Worm, (Knight if Wraith nearby), because many of them presented legitimate threat), just hammers home the most fundamental part of Deep Dungeon, and exploratory anyway which is aggro types. But hey, be excited guys because we have Tetramanders this time (or whatever they decide to rename them)!
As someone who has been on both sides of this argument, you need to realize that many people who are complaining and 'terminal doomers', are people that have played this game well when they were taking risks like giving Coven weapons which had the potential to rival or be better than both relic & tome weapons, or when they played around with FC content, or when they actually made GC items part of the core content loop, and not just rushing a risk-free formula to try and appease everything. Not only that but people that are well attuned with how XIV does things, and not only XIV, but also the community.
I don't like being that one guy, but this exact same pattern has happened for the betterment of a decade. In about 2 weeks after the 7.2 launch, once people have cleared and once they realize yet again all they can fall back on is weekly reclears, then we will be back to the very same argument. We will be back to the very same issue that everything is so mundanely drip fed. Then Cosmic will come out, and it may feel fresh, give it a few weeks and how people consume it will be exactly no different to how Ishgard was consumed. Same thing with the DoH/L relics, same thing when eventually it becomes bot infested because they have managed to reduce crafting to where it is effectively just press 2 buttons. Will likely eventually be the same result with Occult Crescent, and the new deep dungeon
The most entertaining thing about this post, is I actually want to be wrong (even if I know better), so do many of the doom posters, really (But many, including myself have simply exhausted the 'benefit of the doubt' factor). But any given piece of content can only be as fun as the core systems supporting it (e.g., the ability suite of crafters, gatherers, and combat), when you reduce that so much, you only inhibit the fun factor of any given feature you decide to introduce.
Happy for them, really.. But it ain't going to preclude anything else.