I am a little bit annoyed that there is an assumption that 200 lbs. is considered heavy or that the sport is ""geared for the ultra light". I was 205 lbs with 4% body fat. and I am 210 now.
The lycra clad whippets I see out on their weekend warrior rides might look like lance but he is light because he is short.
Muscle is heavy, if you are less than 200 lbs how tall can you be without being emaciated?
Additionally, why are you making muscular riders feel like outsiders? For that matter why are you describing riding as a "sport". Both of these fallacies work against widespread cycling and the benefits it can bring.