We now have bi-directional data exchange between Revit <–> Rhino. A new version has been posted to the Food4Rhino site http://www.food4rhino.com/project/hummingbird?ufh that includes a component for reading .CSV files and using the data to build geometry in Rhino-Grasshopper. This version also includes a lot of small fixes and additions so be sure to look at the new Users Guide.
There is also a new site, in addition to the FoodForRhino site, where you can download software as well as sample data and other kinds of resources: http://www.whitefeet.com/Hummingbird/
And keep sending messages and posting stories about what you are doing.