Mine is a beautiful 1912 craftsman.
The po's Sheetrock over the lath and plaster.
When I do a room, I take it back to the studs, insulate all walls and ceilings, new, (and more) 12ga weiring, lots of low volt, heavily reinforce all framing, then use that thicker sheet rock on the walls (fire rated) only because it is soooo much stronger.
I typically only like to do things once. My background in home construction is this house. If code requires 2x6, I will use 2x8's, why not, it is not that much more?