Nier already had a whole 24 man raid, meaning there was 3 massive cross over on 3 different patches.
And last patch we even got the mount. I think it's enough and time to move on to other cross over.
Especially after that final raid, area with big white cubes, most mechanics being in or sides dodge.
Not everyone likes Nier. I know it's very difficult to digest, but the game doesn't stick to everyone.