Hey Nick,
This is just an idea - it may not happen but it could, it just depends! I'm a member of a local orchestra (aren't we all?) and I know the conductor very well. Maybe I could hold a competition in which people write a piece for our orchestra and the winner has it premiered (next concert in September). They'd get a recording and sure, may chuck in a score as well
Wouldn't really matter about judges as I pretty much know the orchestra back-to-front and would be able to sort out the unplayable pieces from the playable. I'll have to speak to the conductor about it first but I could have a reply to you soon.
I think many people would be interested - it's just like a commission and I know composers go MAD for them. Note there wouldn't be money involved just a recording - but surely that would be the best thing about the whole thing?