Yes, this would be useful.
My problem is that the New Project dialog, including the Project Wizard API (used by all wizards, including the importers), is designed for a single project. Importing a group of projects (like .DSW) require a different approach. So far I havn't come up with a clean solution to this.
(A bit of a pain, but since it's possible to import project-by-project, I prefer to find a clean solution, rather than adding some form of "hack").
Pelle