Former American Idol boss Nigel Lythgoe says that while Kara DioGuardi is "very good" in her capacity alongside Simon, Randy and Paula, as a matter of principle he is "not a fourth judge fan."
"What we've seen is that four judges tend to take away time from the program, which was always going to be the problem," he explained during a visit to TVGuide.com.
Lythgoe's comments about Idol's addition of a judge come on the heels of DioGuardi revealing to ET that she only was signed to a one-season deal, yet hopes to stay on.
On Fox's summertime reality smash, So You Think You Can Dance (premiering Season 5 on May 21), executive producer Lythgoe also serves as a judge alongside Mary Murphy and a rotating choreographer. But rarely has that competition ever trotted in a fourth panelist.
Does Lythgoe think that the addition of DioGuardi, the Judges' Save and the expansion to a Top 36 are all changes worth keeping? "They've tried a lot of different things," he notes. "I think they'll probably ... keep some of them and lose others."