I would appreciate some further clarification here...
"You should be able to create components in place and no need to move or create at the origin and use a joint to position." Did you mean NOT need to move? Do you have a tutorial you can reference for using a joint to position?
"Also you should create sketches then bodies in place using references. In a sketch project references from the body you want to add to then extrude using references for Start and Extent." I understand what sketches/bodies are however I don't exactly understand the rest, at least not is it may apply to every scenario. Again, a tutorial reference would be very helpful.
Also, thanks for spending time helping others.