Literally all they'd have to do is release the server executable(s) they already have. The community will do whatever work is necessary to get them running even if they require a cursed stack and client modifications.
At least now it’s pretty straight forward for a hobbies group or individual to reverse the protocol and implement something that’s open source along with patches
At least now it’s pretty straight forward for a hobbies group or individual to reverse the protocol and implement something that’s open source along with patches