Very cool idea! I think I could do something like that for Kaidan, not for the challenge, but on my own.
However, while I'd certainly vote for the idea, when you create a Challenge Suggestion thread, you need to create a "yes" or "no" poll with it. You forgot to post a poll.
Unfortunately you can't add it to an existing thread, you have to do it when you first create it, so you'll need to start a new thread, with this idea, DK. Insure you go to the bottom of the page, to require a poll, give it 2 options, click OK, then it will take you to a new page where you place the actual poll verbage.