I have a dream I'll one day be asked to interview someone, and get to try out my unconventional idea... (Or have it done to me one day.) I hate standard coding

I have a dream I'll one day be asked to interview someone, and get to try out my unconventional idea... (Or have it done to me one day.) I hate standard coding exercises, and I expect the candidate to have already been vetted for being able to code by either having some open source work or if none is available being given a take-home fizzbuzz-ish problem. My idea is to pick a problem off my own personal list of things I'd like to explore, things I'd like to reinvent code for from high level descriptions if I had more time/discipline (for example drawing voronoi diagrams), and do this alongside the candidate, so together we can attack the problem with a whiteboard and a shared computer or two for wikipedia/pseudo-code/real-code/etc. We may not get very far in just an hour, we might not even get to code, but it will be good information for both myself evaluating the candidate and the candidate evaluating me about how we collaborate on a problem neither of us knows the complete solution to in advance.