I think what posfan12 would like to see is an option to limit which parts show up in the parts list in the program, filtered by set number. A kind of temporary limitation on which parts the program will allow you to use.
I can see it being useful for things like recreating or modifying an existing set in SR3D. You would be sure you were using the correct parts, for one.
Whether it's feasible or not is another thing. You'd have to pull set inventories from somewhere as they aren't part of SR3D's database. Limiting parts by color would be another headache.
It's an interesting idea, though.