One thing that I notice is that the 'additional detail' makes it look as if the surface is made up of individual tiles. From an engineering standpoint, that did not go well for the shuttles because they kept falling off.
I much prefer the smoother look, without all of the clutter.
The refit has hull panelling like that. The edges are just not as noticeable.
The TOS Connie has it in some appearences outside of TOS, but the filming model at the Smithsonian doesn't seem to.