We typically use pipes from 1/2" to 36" on projects using multiple pipe materials (copper, DI, PVC, etc.) and would like to see improvements to the built-in catalogs. Specifically parts and pieces that are used in the real-world (ie DI flanged fittings, DI Mechanical Joint, etc.). Currently we reference the "GI" or "Grey Iron" for our fittings as there are no specific "DI" fittings. However, this is not optimal as when we are in 3D view, the pipe material/color vs. fitting material/colors do not match. Many of our engineers are not satisfied by this display.