I haven't experienced the game yet, but the mate centers were really fun! Though, i really hated when there was more female then males. :/ Then if they wasn't enough males we had to wait some more or the person would sign off. Nevertheless, i remember having this amazing person as a partner to roleplay with and theh vanished. Oh, well.
Mate center should come back. I would love to get a mate and try to roleplay with them over discord. *shrug*