Has there been any thoughts or conversations with BOM software apps to integrate with Aha!? Tracking BOM for hardware products is very complementary to Aha!.
So, rather than, say, attaching spreadsheet files (containing a BOM) to any single Feature in a release...or...making a Feature board a BOM, integration with a BOM software app (or a lite ERP product) would, IMHO, be a great fit for Aha!.