ERP features that always amaze: kit demand; click a button, get a colored report with charts; click a button, see who and when changes were made to a part/order/entry.

Another was version control for bom/assembly processes. They wanted a visual tool for showing the differences. Sort of like a diff tool, but all the files were shown instead of just two at a time. Also, who made the changes.

As an engineer currently migrating decades old paper records to an entry level ERP, this would be an amazing killer feature that would blow my non-engineer co-workers away.

Basic version control on product data without shelling out for a massive overkill PDM/ERP/CAD integration would make me pant with hot joy.

One client used autocad. We re-built it in javascript/html, then added version contol and reports.

I'm curious, how did you handle dwg files? I understand they can be quite complex.

We had them export to pdf, then imported them. Our system stored pdf objects for display. Since it was a migration, backwards compatibility was irrelevant.

Numerous libraries support parsing .dwg files. Autodesk provides a JavaScript library, though under fairly restrictive terms.