DSD import/export for MicroDrainage exists but HydroWorks is now dead. A more generic import/export would be beneficial for exchange of information with other drainage simulation packages and with GIS systems for existing networks; something similar to the import/xport functins in ICM would be ideal.

Make Pipes and Inlet available in Revit

CIRIA make a tool for valuing the benefits of green infrastructure. The results enable users to understand and quantify the wider value of SuDS and natural flood management measures. Being able to include this in the drainage design when comparing scenarios would be useful.

Add a link to take drainage design data into Innovyze's InfoAsset Asset Management Software to complete the cycle of design - build - manage - maintain cycle.

A simple polygon
Using the parcel object of Civil 3D
Using the catchment object of Civil 3D
Something else.