In that case for my purposes a 9 or 10 speed setup of heavier duty hard chrome components would be very good , with a gearing range spaced something like this : 11-15-19-23-27-31-35-39-42 (46)One factor to remember is that 10, 11, and 12-speed cassettes all fit on the same width hub, which was originally sized when 10-speeds were introduced. So think about how they're able to add one and now two cogs to the cassette in the same total width. The answer of course is to make everything thinner and more closely spaced. This of course is going to have an effect on the strength of the cogs (which could be alleviated by choice of materials) and also requires a narrower chain that is achieved with narrower rollers (matching the thinner cogs) and thinner side plates.
I actually have a minor concern with how the 12-speed setup will wear on the Vado 5.0 SL that I hope to get, and would be really concerned if they put a 12-speed on the full-power Vado line!
And Campagnolo has introduced a 1x13 drivetrain...