Hi,
This feature was requested by other users as well. We'll think on that for next updates.
Anyway, there are cases which we don't know how to handle.
For example, a segment may sliced, scaled, bended or deformed in multiple ways. How to count it ? Even a instanced segment can be scaled, resulting on different pieces.
Probably a simple approach, as counting how many times a segment is used, is not enough for most of cases.
If that helps, in latest RC6 beta we have introduced an exporting tool to XML.
Not exactly a BOM, but perhaps XML could be processed to get a list of segments and their dimensions.