Just observe private server scene in last month. Apollo 2 is full of people and same on new wotkl realms. Tomorrow new warmane wotkl realm will start and I'm sure there will be a shit ton of new players there. Everyone know's that Tauri has best scripted mop server. Most of the work is done anyways, they have fully scripted server they just need to release new realm.
Can you consider creating fresh mop realm soon? This corona situation made some new private servers like apollo 2 full 24/7. I know many people would love to play on mop realm but from start not just jumping into soo. It's a long time before you release new legion realm and new mop realm would be nice for a year of waiting.