Bravo guys... sorry not had a chance to participate, jealous of those that did!
Im with @philoop and @mtyas, Im not so much into the 'competition' element, hence why I named this section challenges, as I quite liked the idea for challenges as 'focused inspiration'. similarly I don't think constraints matter so much, that focus can come from anywhere
if there is a move to using the community library, then AXS files are not such an issue, similarly custom objects can be used
voting, I don't see if as vital either... and perhaps not really valid unless there are more entries.
I guess you'll have to work out a way to decide on the next challenge, but that can be done by consensus.
btw: the post regarding 'rules' is a wiki post, so anyone can edit it, to reflect the consensus of how its to be run
anyway well done to those competing, I hope I can get some time to come back to it this soon.