Honestly, the idea of an ARW record was so up-in-the-air for a long time that I began to lose interest. Jon likes to keep busy, as we have seen with his work with Stolt and his upcoming solo album, but it seems like nothing was going to happen with Rabin and/or Wakeman.
Should Jon team back up with the rest of the current Yes band and do a 50th anniversary tour? I don't see why not. It would be a HUGE money-making tour, because fans old and new will flock to it, just to see Jon with Steve and Alan again. Heck, bring back any and every Yesman they can get, and cover all eras of Yes. Do a retrospective tour where they play one song per album, or celebrate a single album throughout (if Jon's voice can handle that, that is).
Honestly, if there is hope for one major 70's prog reunion left, it's Yes. While King Crimson still trucks on, the likes of Genesis and Pink Floyd will never reunite, and being that Yes is one of the oldest institutions in progressive rock, it would be a shame if they passed up this landmark because they aren't playing nice. Do it for the band, for the fans, and for Chris.
-Marc.