Is there any good reason to install the ArcGIS for Desktop VBA Compatibility for 10.3.1? Any custom tools that were created in VBA were moved to .NET years ago. We also use a lot of Python scripts. I don't know of anything we are using that requires VBA. We installed the Desktop VBA Compatibility at 10.2 but I think that was more for "just in case" scenarios. I really don't think it is needed. Is it merely there to install for legacy applications or am I missing something?