I am 6’7" tall but the virtual world does not show taller riders any different to shorter rides. Perhaps you should allow us to put our height in and then size the virtual bike and rider to make it look realistic? It would make it easier for people to recognize their friends as it would be closer to real life on the road
Also if you do have taller riders, you should then add support for that into your draft code as well. When someone short sits on my wheel it should feel like they are getting a free ride!