If you could change the graphics settings like the past battlescapes and a different setting would show items and monsters as pre eoc (for example kodai to chaotic staff or Demonic gorillas to tormented Demons) that would be very cool, But I'm sure its not worth all of the work. When it comes to pre-eoc I highly doubt its going to help the server in anyway.
Personally, I feel like if we want to grow and have more longevity we need to have customs that are coded really well. If we added Dung for chaotics but The chaotics were balanced to not be much better than what we have, But also be worth getting I would say that would be a cool update. I don't think the whole waiting 3 months for us to get an update that OSRS and other servers got already isn't going to help us get anywhere. When people get on if they have played osrs before they already know almost everything about this server, Its things like wildy barrows that is unique and makes the server stand out a bit.