We are attempting to come up with policy on how to best use a master assembly of our standard vehicle in other designs. This vehicle is the backbone of many of our programs. Some programs take this vehicle assembly and add components to it. However, some take the vehicle as delivered and strip some parts then replace with modified or new parts. So this vehicle master assembly is always used in a next higher assembly. Question is for the projects requiring stripped parts the master assembly must not display the parts to be modified or replaced. Our options seem to be (1) hiding these parts in the NHA (2) doing feature cuts of the parts in the NHA (3) creating a configuration in the master assy with these components suppressed. We can't hide because the mass props would reflect the hidden parts. I'm not fond of feature cuts and think it is a bad practice. Creating the configs drives file size up and a model librarian has to be the one to perform this since it is a locked master assy. Does anyone have any clever ideas on how to best do this. We are talking maybe 5-10 configs of the master, size is about 15-20 MB. We want to keep the master in tact and in the product structure so Smarteam can manage any updates that could occur on the master. Running SW 2007, about to go to 2008.