Sure, but I'd assume they'd decide that in a later phase. Submitting something to YCommonApp is just like going to a mixer where you think interesting companies might be.
I was thinking about proposing something like a mixer (after reading these threads today), and now that you've mentioned it - why not have regular mixers for hiring YC companies and interested hackers?
OK, that's fair... maybe they can decide at a later phase. I guess I take issue with this being presented as a way to "apply to 25+ startups" instead of a more "mixer-like" approach.