I think these changes are good even if memeing is enjoyable. Just put the memes in LOOC.
But xeno RP being boring is a legitimate problem.
Like, there is only so much you can do with being a perfect organism and killing tallhosts and whatever, all hivemind no personality.
After a while it gets painfully dull.
This will sound wild but you could just enable XOOC for xenos and then the line between memes and IC would be clear.