I would like the ability to "group" features in the browser on Inventor. In product design, we often have single design features on a part that are made up of several model features (extrusions, holes, drafts, fillets etc..). It would be useful to be able to group features in the browser into logical "blocks" (in a similar way that you can group objects in AutoCAD). This would make the browser easier to navigate, it would also make it easier to manipulate design features (move, delete, suppress etc..), but where it would be really useful, is when creating iParts, because a single design feature could be covered by one column in the table instead of several, making the whole process neater and easier. I used to use Pro/E, which had this facility, so I know how useful it can be.