This is one of the things I miss most tbh. Vines and plants were some of my favorite deco and I had a lot of fun with punnit squares trying to figure out what my crosses were gonna turn into. It's trammy shit but it was fun. Just leave out the leaves that affected PvP and keep in all the deco stuff. Or Perfect(tm) the system and add some additional stuff that can be gained (that wont negatively affect PvP) from gardening. I didn't start UO until Lord Blackthorn's Revenge so there's a bunch of stuff I'm nostalgic for that isn't here that I really don't see the harm in.
It was a fun thing to do on the side for sure. I loved the deco options too, and there was a use for the fertile dirt I would collect from smashing earth elementals in Despise! (the "noob" dungeon back then). I'd be surprised of it ever gets done here, but hopefully at some point...
Remove the overly neon stuff that osi might have put in, anything that gives pvp boosts, and put it in!