In regards to the 4th spot, I've found everyone they have brought in to be mostly informed, level headed, and enjoyable. Of all their guests, I've enjoyed Jeff Green and his off the wall humor, PC experiences the most. The guy shines like a good penny with the cast.
But now, I'm of the opinion that it serves 1UP Yours' interests and it's growing fan base to continue changing it up, bring someone in who has a different opinion, different experiences and humor. Kinda like how The 1UP Show handles showcasing it's huge cast, almost everyone has a turn at the helm.
Anyways. Looking forward to next week and their continued E3 talk.