I'm not saying that this is not a doping-related issue, but one contributing factor in the decline of the super-domestique might be the current economic situation in pro-cycling. USPS had several super-domestiques because they had the money to pay them, and Telekom also had a hefty payroll. Also Banesto in the Indurain glory days, etc. When teams have smaller payrolls, they can only afford one or two high salary men, and have to hope that the mid-level or below guys will rise above their pay grade in the mountains. So it's kind of a vicious circle: the constant doping scandals has driven sponsors from the sport and made it hard or impossible for teams have a real stable of stars (bye bye, HTC), which means that the stars can't get the kind of support teams used to be able to give them, which means they win less races and aren't as dominant, which means that teams get less race publicity and so the sponsors they have aren't as happy, and on and on.