The Legacy series drums are close in sound to the old 3-ply shells, but are not exactly the same. I think a lot of it has to do with the types of wood they use now as compared to then, as well as the different bearing edge radius, and the way the shell is made in a mold now as opposed to "hand laid", as it were, back when the original 3-ply shells were being made.
Now, if you are asking about the Classic Maple series, that's a different story. Other than the number of plies changing over the years, they sound pretty much the same as the shells they started producing in the late '70's, commonly referred to as "6-ply" shells. Today's Classic Maple shells are made in those same molds as the original 6-ply shells were, finished to the same degree, same bearing edge, same wood types, same thickness. The only difference being the number of plies used to come to that final thickness.
The thicker shells sound good to my ears, closer to a Gretsch type of sound to my ears. And the earlier 3-ply shells sound good to my ears as well. (I own both types). Both are tonally good, yet drastically different. Both have their place in my book.
As to the issue of hardware, the lugs made today are much thinner wall material and are not exactly the same in a side by side comparison of the lugs they made up until about 15 years ago. So, the lugs are a bit more cheaply made today, not a good thing in my book. The hardware as far as mounts, some of it is better today than it used to be, some not. If you wanted massive overkill for a tom mount, you got a modular setup. I don't think anything made today can come close to the beefiness of that setup. The rail mount they make today is much better than those vintage setups of yesteryear. Although, I can't say longterm if this is the case. All the hardware made today is made in China thanks to the EPA's crackdown on toxic chemicals. This is both good and bad. The hardware that Ludwig used to make in house lasted for decades. Just check out the vintage market and see if I'm wrong. Today's hardware's longevity has yet to be proven. But if we look and see what's out there still for Ludwig hardware that was made in the 1990's & early 2000's, you'll find lots of heavy, but bashed up & broken hardware. It just didn't hold up as well as the early Modular, Hercules, and original Atlas series. To me, there's something to be said about Made in America.
Hope by rambling in helps a bit.......Coffee Break2