How about putting all these ideas for additional classes up on a poll on the Birds site?
I suggest that you have some sort of system where people "register" with the site in order to vote. You only get one vote per registered account, and don't allow any yahoo or hotmail type of email addresses (to prevent people from making multiple accounts to stack the vote).
You could list a whole bunch of classes, and allow people to vote for a maximum of 3, for example.
Certain classes would be locks...such as Stock Foam, Mod Foam, 1/12 stock, etc. This poll would be for any new classes, or ones that were very lightly supported in previous years.