JessicaK:
I loved the challenges, because they prompted me to try new things, both as a writer and as a reader, and because they produced huge volumes of immensely gratifying feedback, both positive and constructively critical.
Yes, I enjoyed the challenges for what they were: a challenge. They forced me to come up with plots under the challenge guidelines that I might never have dreamed up otherwise. I never got off my duff and tried an entry until I think what proved to be the final three and wish now I'd done so earlier. I got more constructive criticism from the comments on those stories than my regular submissions.
Unfortunately all the wailing and gnashing of teeth over the scoring system took the joy out of conducting the challenges for our site owners, especially given how much additional work was involved to post 40-50 stories and run the scoring for them. There's never going to be a perfect scoring mechanism that will make everyone happy so why not remove that aspect altogether and just submit stories for the sake of showing off your work?