One political hack to make the system more responsive is to ask your references to write a standard note to their elected officials (House Reps in particular) in DC, little time commitment on their part. Then, you should follow-up by phone call to the staff in the contacted offices.
This is a standard constituent service provided by DC reps to 'check-up' on these visa applications. While they can't order USCIS to approve you, which is a violation of federal law, since the Reps provide funding for USCIS, the departments tend to treat Reps words with weight. You should especially go through this process for the district you plan on setting up in. That Rep wants new businesses and will have the most incentive to help you out.
As a long shot, pitch Vivek Wadhwa to help out, since he's heavily invested in fighting for the tech community on visa issues.
I've been working in the US for three years now. I have to prove to the immigration department that I am qualified to do a job they already approved me to do. It's led me to be incredibly cynical about whether US immigration is actually interested in me being in the country or not.
Basically, the clarification provided by the Startup Visa would be amazing.