It depends what the thing is. For example something that doesn't match this era at all (like races or AAs no matter my stance on them) shouldn't be put in...not on here based on the server's goal. Ever. Things that simply fix major inconveniences though that Sony later fixed (Guild/Raid managers, zoning pets, etcetc) would be more appropriate.
However the opposing argument still stands. With something like Luclin models it's something you chose, has no impact on gameplay, and others can decline to use it. Things like this do not fit that category, however, and also should arguably be left out.
I once thought about making a server that took the best from Classic and Modern EQ, molded it together and cut the worst out. Even laid out plans for it one Friday night when I should have been out having a life but I don't because I'm me. Unfortunately I have neither the space to host it nor the patience to take on the project alone. Would be nice to see someone do something similar though. We have a server dedicated to Classic, we have a server dedicated to Modern and we have tons dedicated to random custom shit. I'm surprised no one has thought to do this yet.
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