You wanted to try it years ago, and people are ready for it today. You've proven you can run multiple servers, and every steam review/online interview thinks this is a great game "but" dislikes the ability to lose everything. Time to rebrand and become a multiplayer survival sim.
Keep the free to play as is and PVP, continue developing as you are, but offer steam/other players a choice on character creation to choose between pvp and pve worlds. every single successful MMO has this formula. You're doing yourself no favors, give people what they want. I'll argue any point to the contrary, especially from maladaptive goofy people.
Give us a PvE world only silver subs 6+ months can access.
If players want to argue "u'll b griefed!!!" at least they paid the devs a silver sub to do it!