Would you use Viton seals in a rebuilt Corvair engine?  Do you add turn signals and seatbelts to a vintage car?  Advanced aeronautics to a vintage plane?
  The same kinds of choices can be true for shotguns.  
CZapper:
You are dead on with this post CZapper....adding or changing chokes, bores, cones, butt plates etc., to a vintage shotgun is like putting turn signals or seat belts on a vintage vehicle....nothing uglier than a rubber recoil pad on a vintage double, except maybe a beavertail forend contoured like a canoe.....IMO.....
Phil:
You also are dead on....many nice guns are too nice to restore and only need a cleaning with possibly wood refinishing as necessary to return the piece to excellent condition....as long as the barrels and internals have not been butchered up.....I have a few like this as well.......blueing, case colors and engraving were excellent, so I just refinished the wood.....and I consider these guns at least 95%......
Jim:
Yes, you are correct.....there is room for everybody.......after all, the final conclusion is all about individual taste........"beauty is in the eye of the beholder"........or the potential buyer in some cases....!...