Chalk me up as another who didn't like Bullseye on Combs Feud. Part of it is because I like seeing all the answers to a Feud question, not just #1; part of it is because it often led to fairly small Fast Money banks unless one family swept. (And part of it was because they chyroned it instead of using the board.)
I thought WWTBaM switching to the clock was a bad idea, in part because they started the clock when Meredith read the question. One contestant actually kept interrupting her mid-question to just to get as much time as possible ("Which fast food place serves the Tendercrisp? A.) McDonald's, B.) Burger King, C.) Har—" "A.) Burger King, final answer!"). And there was a primetime episode where Regis got the giggles, leaving the poor contestant with a whopping 2 seconds to give an answer — on the $100 question!
Finally, I felt timing the questions just made it too structured. Part of why I liked original-recipe WWTBaM so much was seeing the host-contestant interaction (moreso with Reege than Meredith), and so much of that is reduced when you only have a couple minutes banked up per question. (Not that I'm saying you should pull a Kati Knudsen and take an hour-plus mulling over one question.)