Well, here is how I think it should work:
2 weeks, the last two weeks of july, meaning from 16 of july to 1 of august , so people have summer to work on their game.
Each 2 days 3 new games will be posted on the forum so people can comment on them, so not all the games appear at once, people choose the day they want to see their game to appear.
Spriting Contest should consist of spriting a original zelda enemy not limited to style and size (so it can be a kickass boss or any wicked style you want to be) animations or frames a must.
The last day (1st of august) the winning games will be announced.
Categories:
Best Solo Game
Best Team Game
Best Graphics
Best Original Zelda Gameplay
Best Non-Zelda Games(engines included)
Best 2010-z3 (basically the best of the best)
Hmm, people must submit a webpage for easier view including atleast 3 pictures decent demo(which will be evaluated by the z3 staff), and optional video.
Now if you REALLY REALLY want people to pay attention in this you can always disable the rest of the forums and just allow people to view the z3 boards, that will increase the activity of the z3 and it will not get ignored.
Also! design some users as "Quality Staff" or something like that, basically people or teams that are willing to participate give some screenshots or early demo to this Staff so that they check the quality(as in how the game works/sprites/music etc..) and give productive C+C so at the end we see only kickass games on the z3, this quality staff might also help with minor spriting or coding dunno really just throwing the idea.
Anyways... just an idea.