I think the show Jim did his best work was Name that Tune. Ok, he's no Kennedy, but I feel he did fine. Art James told us at GSC8 that in the game show biz, luck has a LOT to do with success. With the exception of The Dating Game, Jim's other shows just didn't fly, but it was hardly because of Jim.
I think Dating Game didn't last as long with Elaine Joyce, Jeff Mac.Gregor or Brad Sherwood because they tried to make DG a host driven show, and clearly DG flows just fine when you listen in on the bachelor's questions and the bachelorette's answers, with little to no interruption from the host. Elaine, for the most part, stayed out of the way, although she remained on camera with the bachelor or bachelorette. Unfortunately, she turned to jello when she had to talk on camera. Jeff MacGregor cracked many awful jokes, and for a short time, they tried a "Love Connection" format where they talked to DG contestants about their date. Brad Sherwood was just a victim of a newly vamped format that didn't work. When they made changes to make Dating Game more like the original, including adding daisies to the set, it was too late. Chuck Woolery did a fine job with Dating Game, but he said in an interview that he could NEVER host the show as Lange did. Chuck found a way to add in his trademark wit, without taking too much away from the banter between the bachelor and bachelorettes.