I've been working on Wikimedia's Public Policy Initiative team for a little over three months. The level of interest and enthusiasm we've seen from university professors and volunteers interested in the Wikipedia Ambassador Program has been gratifying, but we still have a long way to go before coming anywhere close to realizing the full potential of all the good will and interest among experts who don't (yet) contribute.
One of the great challenges of this project is assessment: how can we measure the degree to which the project is improving Wikipedia? We're working on three assessment projects within WikiProject United States Public Policy, each of which is relevant to the broader issue of content assessment in general on Wikipedia.