Originally posted by vonBaloney They aren't WR, but Samyang has some pretty good ones. Also Voigtlander (Cosina) & Zeiss did for a while.
You can also get new MF glass in K mount from Irix (ultra wides) and Lensbaby (85mm) among others. There is a thread about available K mount lenses here somewhere.
About the idea, I like it too but it is highly unlikely. The thing is, as good as some of the old MF glass back in the day, the game has moved on. Pixel peepers walk the earth now and will have all sort of unkind things to say when they get their hands on these re-released classics.
Perhaps some entrepreneur can license some of the classic designs from Pentax but I don't see that happening either.