Wow, that's huge. I assume that if they are profitable and there business ideas are scalable, their chances for getting into YC greatly improve?
Joking :)
Everything that can increase one's chances of getting into YC seems to be founder qualities (thats what I can make out from what has been said on this by YC in various posts). YC saying what stage a company is in impacts their selection would be a paradigm shift in how it projects itself and its selection process, imho.