This Riggles stuff belongs in a riggles thread. That said,
I think some aspiring managers, like say John Farrell, might be reluctant to take on this turd sandwich. While Manny remained a hot commodity and was fought over by the Indians and Astros, I think some look at Tony Pena and others and think, "if I walk into a no win situation, then I might get canned in 2 years and not get another chance." Better candidates, like a Valentine, might say "I'm on thin ice as it is; I'd better make sure I can succeed where I go."
That said, there does always seem to be takers for bad situations. Showalter, Dusty Baker, etc. . . I'm sure we could bring in Pena or Don Baylor if we want.