I was talking to the venerable Dpuble Bass luthier Martin Penning about this very issue. I took my DB in to him and he basically rebuilt the thing for me. I questioned whether it had affected the originality, and we discussed that in the orchestral world, it's all about tone and playability that matters. He gave my (very) humble instrument the same level of care one many times the price would cost.
When I took a 66 jazz into the workshop to get sorted before a gig the guitar tech was shocked when I suggested resoldering the Jack socket.
Basically, if you play it then it will need work at some point. But it keeps it playable, which is what they're for.
There's something slightly sad about a vintage instrument that's never touched or played or enjoyed. I always believe that about mint condition guitars. Whoever bought it never enjoyed it or used it. Sad really.
Sorry, nonsensical rambling over.