(1) YC has a bias against solo founders; research shows this is not a signal of future success and to me it feels like I'm giving up 17-53.5% of a venture just to get in; YC gets 7% of any venture it funds and YC requires a cofounder have at least 10% equity, but suggest going 50/50.
(2) I personally don't agree with YC doing R&D and feel like this is YC admitting the yield it's getting from backing startups is under performing it doing its own thing, which to me is not a good signal.
(3) Majority of YC's billion dollar startups have all gone through a single VC; why not just deal with them directly?
(4) YC should focus on enabling mentors to expand it's deal flow.
(5) YC should have campus within 60-miles of the Bay Area with free housing, food, super-speed internet, etc. so startups don't have to spend the funds on commodities like this and are able to focus on growing. Free healthcare for a year for founders would be impressive too.
(7) I'm opinionated, largely do startups to learn, not be the next billionaire; personally, done more startups than 99% of founders, do it full-time, and have spent 15-mins plus mentoring 1000s of founders.
(8) YC should set the precedent for making the Bay Area not be the center of the universe for startups.
(9) I miss PG.
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(Above are just a few of the reasons.)