A quick thought before bed:

Dimensions can be placed in a Group, or Groups.

Example:
Group1, all dimensions for subassembly1.
Group1, ChildGroup1, Horizontal Dims.
Group1, ChildGroup2, Vertical Dims.
Group1, ChildGroup3, Angles.
etc...
Maybe laid out better?

Could some such outline of Dimension groups be pre-formatted?
Or it is easy to set it up from scratch...(?)

Currently, a Dimension can be quickly assigned to a Group or ChildGroup.
Select a dimension, and then click on the Group or Child group to assign it to.

- Brian

A Dimension is a type of object, and behaves like geometric objects...

EDIT: Per Michael, Types can be used instead, see next post.