I think current trends in simpler bikes with cleaner lines might help popularize (thus bringing the price down) wide-range internal gear hubs like the Rohloff hub.

On my wish list would be more focus on comfort (consider the timelessness of the Brooks saddle combined with newer materials/design) and reliability (could we get puncture-resistant tires that don't have so much rolling resistance please?). Too much focus is currently on weight and aerodynamics -- which makes sense given that pro racing typically drives innovation, but doesn't help the average cyclist much.