I agree, most modern made guns are getting to be way overdone compared to the original antiques. (At least as far as American made antiques go) Most American builders did everything, made the barrel the hardware stock and sometimes the lock too. If they wanted any decoration they did it themselves too. This type of folk art has great appeal to some people (I'm one) and not so great to others.
In England for example, a different person did the barrel, lock, stocking, engraving, and carving. That's five or more people making one gun. And they made some beautiful guns during the same time period. That type of craftmanship is just not appropriate on early American made guns.
Part of the problem is that too few antiques are readily available for contemporary builders to study. Also the buyers of replica guns seem to favor the more ornate, and extremely well fit and finished guns. They want a piece of history, but they want it to be a really nice looking piece.
The folks at Bowling Green, KY seem to be on the right track with the gun building seminars they offer every Spring. Also Colonial Williamsburg, or the museum at Friendship, IN are great places to see what some real, old guns look like.
Just a few rambling thoughts.
Horse Dr.