Even if you are rejected, you can request feedback on your proposal - and actually, no less than in a meeting.
Whenever I have given a demo or presentation to an angel investor or potential partner; even when it is a 'No', I have gotten some kind of feedback.
It gave me a better understanding of the weaknesses in juwo.
This is more than blindly emailing your executive summary to the VCs - you are not entitled to a reply.
When there is investment in time, effort and hopes, one does expect some kind of feedback.
It is not an application for an award, nor is it an application for employment. Even applying for a University, one has an idea of the cutoff marks and GRE scores.
The YC application is an evaluation of your small business team, and idea.
Big Difference.