Returning contestants don't bother me when it feels like a different "era" of the show -- to make up examples, I wouldn't mind if a
Jeopardy! contestant's story was that they competed when Art Fleming was the host, or if a
Wheel of Fortune contestant said that they had been on the show when Chuck Woolery hosted. Those feel far enough apart.
However, it would feel weird if a contestant told Ken Jennings that they were a contestant when Alex Trebek was the host, especially if it was only ten years ago --
Jeopardy! hasn't appreciably changed in that time. Once Drew took over as host of
The Price Is Right, the vibe of the show changed just enough (it helps that they refaced the entire set) that seeing contestants who had been on Barker's version in the '90s felt fine.
But now that Drew's been hosting for 17 seasons and he's welcoming back people he saw a decade ago? While I'm happy for the hardcore fans who have gotten to play the game twice (congrats to the recent contestant who made his second chance pay off in a big way), as a viewer, it feels weird to see repeat contestants. Especially when they're returning after having won tens of thousands of dollars in prizes during their first appearance.
Of course, you can't regulate based on a gut feeling. "A contestant can only come back if they didn't get out of Contestants' Row" isn't fair to somebody who got screwed over by immediately drawing all the strikes in Three Strikes and then spinning two nickels on the wheel.
Meanwhile, the eligibility requirements for
Let's Make a Deal say that contestants can return after just three years. Granted, the majority of
Let's Make a Deal contestants can only win one mid-tier prize, but when I see a contestant introduce themselves with "I was here three years ago," that feels wrong somehow.