Here are some examples...
Shop Till You Drop- (JD Roberto version) Ok, so the original was on and off the air for about 10 years, with silly and insipid stunts, an overbearing announcer/sidekick, and contestants that stumbled down a spiral staircase more than Jim Peck...it wasn't the greatest show on the air... but they proved it could do MUCH worse... The new format got rid of the stunts, in favor of pricing games that are TOO much like any TPIR pricing game. The bonus game was pretty much the same, just no staircase. JD Roberto really ads no interest to the proceedings, he just goes through the motions. I honestly can't think that ANY host could make this format any more bearable to watch, not even Bob Barker!
The Cheap Show- The celeb guest that doesn't show up, contestants getting messy, an INCREDIBLY ditzy co-host, a homely middle aged game show model, and Oscar the Wonder Rodent! Ok, this parody of a game show MIGHT be good for laughs for maybe a few shows... but you can only milk the same jokes so much! Dick Martin can hardly be blamed for this flimsy format. I don't think that Gene Rayburn or Richard Dawson could've added that much interest despite their gifts for adlibbing and joking around.
Mindreaders- Here's one of those shows that asks "Does the host even have to be there?" Here, it's the celebs that have to sell the show. DIck Martin has little to do with the format. The celebs have to "mindread" 3 different players that they've never met. Ok, so the pilot tested well, but it got pretty tiresome to listen to celebs try to pretend they know someone, and the contestants themselves are given little to do except say "yes" or "no". Mindreaders was clearly a celeb driven show, so they could've gotten ANYBODY to act as host, and the results would've been the same.
Blank Check- I am holding a secret number, can you guess what it is? Pick the number, guess the number, pick the number, guess the number, for an entire half hour. Art James had every right to call the show "Blank Mind"
You're in the Picture- WML was reinvented so many times by Goodson Todman, so why not do it again with Gleason? It could've worked, in fact it should've worked... it just... didn't!
Break the Bank 85- Here's an idea... silly stunts, a veteran emcee, and BIG MONEY. It could've worked, but you can hardly blame Gene Rayburn when the stunts took up too much time, Gene himself wasn't very well briefed on how to do the stunts, much less what direction to go in the prize vault. Nothing really wrong with the maingame, but it's nothing to write home about either. What do they do? They fire a veteran and hire an unknown. Unfortunately Joe Farago can't save the format either, so they got rid of the stunts, and unfortunately Break the Bank just became as much fun as watching paint dry.