Ok, I'll give it a shot
Shop Till You Drop- How can a show with a premise that reeks of ripping off TPIR last for 10 years off and on? Pat Finn proved he could be a lot looser as a host. I thought he was VERY stiff on TJW 90. Mark Walberg moved on to host Russian Roulette and On the Cover, Dee Baker is still doing voicework for Spongebob Squarepants, not sure what Jason Smith is doing, but he was IMO the most tolerable announcer/guest host. The current version with JD Roberto... well, no Dee Baker in drag, but other than that, the show is much less animated than it was.
Sweethearts- The TTTT premise worked just fine. CNR didn't work. I remember one episode where CNR and Richard Kline switched places, and it was evident that CNR was FAR better being a panelist.
Video Power- Now THIS one is tough... Ok, who wouldn't want to win cool video games, but with a host that's a little too touchy feely and just looks totally uncomfy, it's a wonder why this show, which was originally a cartoon/video game hint show got transformed into this monstrousity.
Trivial Pursuit/Boggle/Shuffle/Jumble- Trivial Pursuit was fine, but Wink hosting 4 shows back to back... UGH. One big problem with these formats is that Wink had very little interaction with the players, and the scoring system of getting more points the faster you answer was just a little unfair IMO. Boggle and Shuffle did have interesting formats, but it seemed very rote and monotonous after awhile. Jumble was mindnumbingly easy. Another redeeming factor, it launched the career of a certain Randy West. I guess there is SOME playalong factor with the "interactive" versions, but they too were incredibly dull and wisely pulled.