I usually split my model into a seperate designs per component. This way I can modify only what I want without having to hide/show bodies or components in a monolithic design pattern.
I would like to be able to reference a sketch from a base design.
Example:
1- Design 1 has a sketch with a line that measures 100mm.
2- Design 2 has a sketch which total length is a reference to the line in Design 1.
3- If I make a change to the line in Design 1 to 50mm, the sketch in Design 2 total length should change to 50mm due to the reference.
This way I can decouple all my components from the base Design and just have a new design for assembly purposes only.
Thanks in advance.
Leandro