Having Open Source concepts as a result of challenges, for anyone to use to create positive social impact, is great. But apart from doers having to be able to find this wonderful repository we created the past year, we should also make it easy for them to see how it will look financially. Can we not add a sub-phase, or incorporate in late-stage concepting phase, a way to include budget and estimated financial prognosis for concepts?
Showing that, at least at first glance, a concept is financially viable, may make it easy for people to find funds for realizing that concept and creating impact. It will help lower the barrier of adaptation, I think.
As follows from early comments, I think the refinement stage that was introduced recently, in which concepts that have been chosen for the final evaluation round can be further refined, is a good place for this.
Content-wise, the business model visualisation framework that was also used in the workshops in Brisbane for the local food challenge, could be a good framework to use.