Sketch blocks are great for sketch reusability. We can use a Sketch Block to reuse the same sketch on different planes, or even at multiple locations within a sketch.
It would be great to be able to do the same thing with a normal sketch, too. Anything downstream of a Part sketch should be able to treat the sketch like a sketch block. This would enable us to reuse a normal sketch (or even a derived-in sketch) on a different plane, rotated to a different angle, transposed to a different location, etc. This would have very powerful implications, especially for skeletal and multi-body modeling workflows.