I would like the ability to combine the parts lists from two assemblies into a single table... let me explain.
Quite often I find my self with two very similar assemblies (exactly the same except for one or two parts). Our practice in the past has been to place similar items in a single drawing. When we used AutoCAD it was easy to construct custom tables to our needs. With Inventor the parts lists are limited to only one assembly but you can add multiple parts lists to a drawing.
My thought was if you had two+ parts lists in a drawing you could have a merge/combine tables function. It could combine the two+ tables (of course you would be able to select the tables you want combined) so that there is only one line for each part number but 2+ quantity columns, one for each different configuration.
I'd attach some sample graphics but don't know how.