When you describe it 'in very nice shape' - you describe a used revolver.
Adding those services you mention won't enhance the perceived value, but probably won't lower it, either, since it lost it's 'collectability factor' after the first non-factory cylinder full - forever making it 'used' and not 'factory-new', and serious collectors - who have the disposable income - won't be all 'that' interested.
All they'll do is decrease the thickness of your wallet.
Now, if you're wondering whether these modifications help with the performance, I'd suggest a lot more time invested in 'shooting' the piece, in order to decide that question from the standpoint of actual experience, rather than hearsay.
Scouts Out!