Has YC ever considered a class of only single founders and trying to solve the problems YC anticipates with single founder startups (i.e. emotional support, etc...)
It seems to me that the demand is there, and the potential for single founders to succeed is certainly possible... why not experiment putting together a track that "fills in the blanks" for singe founders much the way YC does with legal and accounting for startups to get started.
Edit: I recognize the signaling issue of not being able to convince a cofounder to join, etc... but sometimes signals are just noise.