Dean Goss would have. As you know, he was supposed to take over for Monty on a third season of TANLMAD and even turned down the chance to be Johnny O's successor but Telepictures said no. He also hosted several pilots. He even auditioned to be Pat's successor on Daytime Wheel.
MG Kelly would have been a good game show host. There was video of him getting on-camera time. I wonder if it was an audition to succeed Pat. I think he should have gotten the job IMO. Because after all that announcing gig was only temporary until Charlie O came back.