I wonder if ClassicUO team and ServUO could work together to where you could generate a key on ServUO side and link it to a client and if you didn't have the key it wouldn't let it connect allowing for disabling some features and things as well? Just ideas.
I am not the creator of this I only hope to share it as it was useful after looking and needing this tool.
It is to update the original/rewrite it to work with newer clients and be more stable.
I am merely posting this so people will help the projcet, find the solution + create more maps for...
If you can find the person on the repo who removed it maybe you can ask why it was removed, maybe it was a stability thing more than a decision to just cut from the community as a whole. Obviously more functionality is better - it might be worth seeing who removed it and getting a why?
Finding...
Did anyone ever get this figured, I as well am having this issue.. obviously the code has progressed since then and is a bit different but after doing some tweaking this was the exact same issue that I was haviung.