If you no longer enjoy the crudeness of it, you can selectively soften up and/or modernize it to try to take the edge off.
I think the choice of vehicle is working against you, though.
E bodies, although beautiful, functionally are not very good choices in a vehicle for someone who appreciates an '80 Regal.

You might want to consider a '73 or later B body instead.....the rubber isolated K frame and suspension
made them much more compliant and cushy. NVH reduction was pretty huge.

As for me, the more I drive modern stuff everyday the more I appreciate the crude, brutal simplicity of older stuff....
however I did choose B bodies because the larger platform just seemed to feel better and make more sense.