-I very much agree with the point about menagerie'ing cats.
Sometimes when I bring a really nice cat to auction, people go all WAAAH! when they can see on the pedigree that I menagerie'd the parents. -But why would I keep parents that has a SLIGHT chance of breeding THAT kind of cat again, once I got kittens that do the job way better - and every time? -And why on earth would I SELL those parents, risking that someone else breed my "signature breed" from the cats I was forced to sell REALLY cheap because they show none of all the goodies they hide?? No way. They go to menagerie, live happily ever after, and are still accessible from my pedigree page when I look back in pedigrees. Win-win.
I very rarely sell the cats I breed - I breed for what I do, and once I reached the goal and have a "pure line", THEN I sell kittens. All the "halfway-cats" are in menagerie, never on fire sales. Only exception is when being flooded by one gender only