We promote 3DA from the model to the drawing (idw) so that the tolerances on the drawings are associative to the model.
These dimensions should not be able to be written over again in the drawing. These dimensions should be blocked so that you can immediately see these dimensions are promoted from the model and not manually entered.
Currently, when the dimensions are promoted from the model to the drawing, we do not immediately see which of them come from the model. Sure I can display them all at once, which come from the model, but that is dangerous. Colleagues can still overwrite the dimensions if they are not careful. If the dimensions were blocked and not rewritable, this would be a great help and security when creating derived drawings from the model.