I very much agree with David's comment. This project shows really well how local ownership by citizens could be used to hold local leaders accountable (monitoring infrastructure or waste removal). This kind of citizen monitoring can reduce corruption and improve that the money actually arrives where it should.

One thing that I would find interesting is to have a deeper look at basic services such as health or education delivered to the community. I am not an expert in education (much less in Kenya), but for example it would be great to add a layer to map and compare the amount of schools in Kibera compared to other neighborhoods. Or try to match up the budget dedicated to the schools and what actually arrives. This could be simply a picture of the school building/learning materials available contrasted with what should be there in terms of money/materials/teachers at this school. One could also graphically show the
amount of children per classroom. Potential partners could be parents or teachers associations.

Similar with the hospitals in the neighbourhood.

Finally, the great thing about maps is that they really spark the imagination of what one could do...
Georg