The problem scaling YC is definately time, it sometime sucks that we only have 24hrs/day!...I had a few friends that were VCs and they worked like dogs. A few VCs shuffle you off to a Jr. Associate, which has some negatives, the biggest being that if you had any experience at all, you knew more about running a business than they did.

If I was in PG shoes and I had to scale the business, I'd definately recommend getting some Sr. Operational folks with a like-mind to work very closely with the portfolio companies.