Campag is already proprietary enough without cutting yourself off from affordable cassettes etc. Personally, I only really want to run one system across all my bikes and until 11 speed trickles down to Veloce etc then I'll be happy* with 10 spd Record and Veloce.
edit: when I say happy - I mean that I will (of course) continue to moan ad nauseam about it on internet forums whenever a part fails :)
Meh - no choice of chains or cassettes..
Campag is already proprietary enough without cutting yourself off from affordable cassettes etc. Personally, I only really want to run one system across all my bikes and until 11 speed trickles down to Veloce etc then I'll be happy* with 10 spd Record and Veloce.