I just hope that the audience that genuinely likes the show gives the new person a fair shot, though I doubt it will happen. Supposed fan forums will be filled with snipes about how "Bob didn't do it that way!" and nitpicks over whatever tweaks they make to the show.
Bob didn't do it Bill Cullen's way, and things worked out just fine. Let the new person be judged on their abilities, not against an impossible legacy of someone who did it for 35 years.
Then again, people are still griping that Alex Trebek doesn't do things Art Flemming's way, so why should things be any different when someone else walks through those studio doors......