Let's say I've worked for eons over an issue and finally figured out my problem (on verge of posting a SO question). What if i want to "challenge" other SO users to find the same or a different, better solution to the problem, as well as possibly reward the best answer. BUT, i already know the answer. Should i just post this as a question and award a bounty if i'm feeling generous? Or would this make for a new feature? If the latter, there would need to be a reputation cap, for sure (we wouldn't want new users "challenging" experienced users to print something to the screen or something stupidly easy like that).
EDIT: Also, if it were a new feature, perhaps the "reward" feature would not necessarily take away from a user's reputation. On the other hand, due to the rep cap, a user posting a challenge would have rep to spare. Then again, more advanced users could perhaps set the "difficulty" of the challenge and give out large sums that go beyond a reasonably sacrificial amount of their rep.
These are all ideas. I'm thinking aloud, and my brain is a mess. :)