Why would I be the only one playing it? I'd spin up a few hundred agents to play along with me. Or make a NPC system that acts like real players. The bonus is these players are all friendly and willing to play with you no matter your gear/skill.
Add in small multiplayer, 2-6 people, and now you are basically playing modern WoW.
Add in small multiplayer, 2-6 people, and now you are basically playing modern WoW.