Personally I would prefer if someone else would volunteer to host the next Epic BB (maybe Kitharsis, Faidth or Danyael?). However, if nobody comes forward, I do have a suggestion of my own:
I'd propose a return (and conclusion) to the 'Salt in the Wound' plotline, the epic BB that ran just prior to the Eye of Terror campaign. Jihon put a hold on that storyline with the intention of finishing it at some point in the future - due to some tragic circumstances, it never finished. I'd like to see it concluded.
I have a few notes from Jihon regarding this, though they're sketchy at best. I understand Cameron might have notes and things available too. I'd have to come up with a rough plot arc, and I don't expect the overall storyline will be as long (or complex) as some we've seen in the past, but it's one possibility.
But I've already been Battle Master once, so if someone who hasn't had a go wants to, I'd be willing to step aside.