I don't think body shops will much care either way once they get over the initial shock and how to prep for paint. Most body work these days is remove & replace

I don't think body shops will much care either way once they get over the initial shock and how to prep for paint. Most body work these days is remove & replace of large panels. Instead of welding they will have to use adhesives (or train their workers to use a TIG) and they will need to have a dedicated set of abrasives for the aluminum work. Aluminum damage to the structural (sub)frame is a whole different beast than in the (non-structural) body panels. Aluminum work hardens when bent. When it hardens it become brittle and can crack from stress and vibration. Any damage has to be completely replaced with fresh metal. Corrosion is still an issue with aluminum though it tends to self-protect itself. If you really want to mess up something aluminum add some mercury..