The most helpful thing for how I use PondPack would be the ability to import catchment areas from CAD polyline work and maybe hatches in CAD. That way when we hatch a site pervious and impervious the numbers would automatically populate a catchment area. Especially if we could link these dynamically so we always have the most up to date impervious numbers in our two models.
You might want to use CivilStorm for this instead. You can import catchment and land use polygons through ModelBuilder, and we can overlay land use with catchment area to determine catchment properties.