In my opinion, you need the help of your Congressman or lawyer to get a permit outside of Bridge Day. And I've already tried the Congressman approach (apparently he's got more important things to do).
You might make more progress by organizing a packing protest or bugging your elected officials.
I just read through the 05 Yosemite permit request. Not that you need to here it from me, but nice job. Especially the response letter and contacting the congressman.