In my opinion, it's not so much a host's name or their resume that concerns me, it's the ability to carry the show on successfully, although it should remain live to tape...
I have frequently said that the most vital ingredient to being successful on a show of this type is not how well you know the format, not how well you know the rules to the game(s), but how you interact with the contestants and make that special magic, in turn making us enjoy seeing the contestants and enjoy seeing them win, lose or whatnot. As long as we have hosts to get us the great, memorable moments that successful hosts have given us, then the tradition of game shows will go on.
Granted, my opinion does not have much to do with live to tape other than a mere mention of it, but it's what was on my mind when I read this thread.