Yes, and from what I can gather, Wolfgang, the Tour de France was already a huge event when Merckx won all jerseys.
I was surprised that Armstong came back, but now I think it's to do with his own team that he's just announced - maybe he'll be a rider, briefly, then a director of it..?
Also, how about the idea of a most-stage-winners jersey, whereby, if 2 or more cyclists were on the same number, it would stay with the first one to reach that number..?