This is because solidworks does not have the native windchill PLM, and it does not work with surfacing or large models nearly as well.

Solidwork's goal was to unseat Creo, which it actually did fantastically, but it has not beaten Creo out of it's last niches. The other designers can then reference the points without needing to know the details of how a part was modeled. The goal is to manage interfaces from the 'top', allowing designers to say 'this location is important to other groups and may change over time'. In your design of the suspension you could reference both of them. Then have another skeleton that defines how all the suspension components interface to each other, and is referenced from the top level skeleton.

For example if you were modeling a car, there could be one skeleton that drives the major overall dimensions such as wheelbase and track width. You can also have multiple skeletons to control different aspects of the design. This means when you want to change a dimension, you change it in one location and it populates thought the model. The skeleton is then included in all other parts. The basic idea of top town is the dimensions that drive the design are all controlled in one place (in Creo this is called a skeleton).

Creo cad