I'm with Austenite and Danish. It seems like too much complication to try and make this a perfectly fair perfectly balanced competition. We're all a bunch of not-famous composers just putting out our music for some other not-famous composers who we've never met to get some feedback on it. I don't like to appear dismissive of your concerns Ken, but I don't think we should be so worried about prejudice towards longer works. I'm sure the judges will feel that there are pros, cons, strengths and weaknesses to both long and short works.
Gylfi, I can understand you thinking that more constrictions can be healthy and that some of us are hiding from our inadequacies by spurning limitation. I also can't help but feel mildly discomfited at the (somewhat accurate) suggestion. Honestly though, the difficulty of writing under stern requirements is not what seems to me the biggest issue. I'm actually more concerned with trying to find time to write such a work when many of us may have other projects or busy schedules (work, family, volunteering, friends who I only get to see briefly in the summer, self-serving social functions like picnics) that we simply prioritize more highly than an online competition with no real stakes. But that doesn't meant I don't also want to find time and energy for this and make it work or that I don't value the opportunity to write something and set it up against all of your submissions. It just means that it would be easier to get into the swing of things by starting off with an easier challenge. Like Danish said, as we move forward we can start to introduce more of those beloved limitations of yours and see where it takes us.