Currently, analyzing solids that have been grouped together is a big no-no, and isn't even permitted. This throws a wrench in common workflows among CAD users.

When working with complex models, it's nice to group parts together so you can move them around, isolate, or hide easily. And often these groups are created by the user to form "subassemblies" within the overall product.

It would be a really cool feature if groups could remain grouped during analyzation and when discovered be prompted to either "Save detected group as a new project-level subassembly" {user provides custom name}, or "Separate group (ungroup) solids and proceed with standard analyzation".

To further add to the idea of analyzing subassemblies, it would be pretty freaking awesome if we could choose to analyze solids as a product or project-level subassembly. For example, in the past I've modeled up a custom "trash pullout", analyzed it, opened Edit Design Data, copied the parts, pasted them into a new project-level subassembly, and then was able to drop that into different products throughout my project - obviously, these were not parametric without giving them a little spreadsheet love (this gives me another wacky idea).

But to have the option at the initial save screen would be a pretty handy feature.

*Credit to Leef and Tony @ Master Millwork for these ideas.