The minute you get on a bike you run serious risks for injury especially if you ride brakeless and in traffic. I'm not trying to start a brakeless or not debate, as thats like arguing over wearing condoms/a helmet/anything else that is a personal choice. I do think that risks are inherent in riding a bicycle, as unfortunate as that is, and alleycats seem to bring out the worst in some people, encouraging riders to try and sqeeze the yellow or red they normally wouldnt etc. I think that this aspect of the race is sort of what makes it what it is, but on the other hand, it can be unsafe. I think as far as the avoiding a pro style situation that will be avoided entirely through the (largely) casual mindset behind the races. People are there BECAUSE they dont want to race in some road race. Afterparties arent going to go away because you put rules in place, so I think the idea that the atmosphere could be effected might be hasty. But thats my opinion.