I would love more NieR content in FFXIV. In fact I had made a thread suggesting a crossover event with NieR Reincarnation (
https://forum.square-enix.com/ffxiv/...tion-Crossover) which is the mobile game as that game itself is having a crossover with FFXIV but it was received rather poorly here on the forum. It seemed like a lot of people are upset with the fact that the ShB alliance raid was "taken up" by the NieR Automata crossover so they basically don't want any more NieR content in the game of any kind. I'm personally a huge fan of NieR and I'm gonna take every possible bit of NieR content in FFXIV. The NieR raids are my favorite, the NieR glam is my favorite in the whole game.
I think another crossover with any of the NieR games would be amazing as long as its a side thing which doesn't take away from any of the "original" content so people don't get upset. I understand people who don't like it taking up original content from the game because they're not NieR fans, fine. But I don't understand the ones who are against it in general. Hell, even if they add some glams/weapons/mounts to the MogStation for real money I'd be fine with paying for them too. Literally any option is fine by me. I also don't think the "just go play nier" argument is valid as its entirely different because we want it in THIS game and we already know they're willing to do it. We usually just want glamour and mounts and most of us NieR fans are willing to pay real money for them anyway. And you can't say that NieR items "don't fit" in with FFXIV as we have all sorts of glam, weapons and mounts in the game, thats not really an argument either. The devs have decided that it fits so it fits.