You should consider placing them into a 1 or 2 year “on the job training” program at another YC company before sticking them in a batch.

Maybe you could offer that as a “waitlist” option.

YC has done that over the years and I believe is planning another such program. Not every prospective founder wants to do that, though, so there's a need for both options.

I like that suggestion. Work experience at a startup is eye opening.