Similar to my question Does the Area 51 proposal "Experimental or Applied Physics" duplicate this site? (which could still use a consensus—hint, hint …)
There's an Area 51 proposal named High Energy Physics.
While I've looked at your FAQ, I don't know the field well enough to be comfortable making the call on my own—which brings me here.
Can y'all review that proposal, and give your opinion as to whether it overlaps with or duplicates this site or Theoretical Physics?