> I think one thing that people don't realize is that the YC application process is really one of the best tools for "sharpening" your idea/business.

Meh. Sharping your concept, yes. It is a snapshot of your concept.

The best way to sharpen your idea/business is to sell. That way, the "sharpening" process is iterative instead of a once-off event.

Honestly, YC isn't what you think it is. PS: I have a few YC customers and their founders aren't what the media make them out to be.