No inovation?! The beauty of the road bike is in that through the centuries our world has gone from SHAKESPEARE to now but the bike stays the same. Why does the bike need to go through some total overhaul?
And what about materials? We've gone from steel to titanium to aluminum to carbon fiber, in the future possibly boron fiber. Parts have also become much more reliable and longer lasting.
I can't even imagine what it would be like in criteriums if one guy gets nervous. There can be too much stopping power....
And what roadgator said... theres not a lot left to do without going backwards...