Re-edited - my revision attempt crashed.

A state of the art bicycle is a velomobile. Even bicycles are better if recumbent and partly streamlined. I really hope that we will have components designed for trikes instead of adapted from bicycles. A rear derailleur should work much like a front one, with the chain take-up handled by a separate mechanism that also helps with chain routing and allows much more variation, so we can use big, efficient chainwheels. Being enclosed, it can be cheap and ugly without hurting performance. It should probably include an oil bath, and keep it off the rider. Wheels should be dished like car wheels to make more room for both brakes and suspension and reduce weight. All three should be quick-change and identical, so a spare can be carried. Tires should be radial-belted, but skinny, with excellent suspension. Pedals should automatically adjust to grip any shoe and support your heel. The electric boosters should go on the front wheels for 3WD. There may be solar panels that extend when parked. Protection might be primarily electronic, requiring thieves to start by deploying a Faraday cage, unseen. Models should be available with enclosed luggage space/child seats. Design sketches, more details, and other support is available for all of these features.