At a minimum, if applicable, I would do away with any crimp connections that could instead be soldered and replace the binding posts with low-mass pure copper. There is no way those mods could have negative consequences.
If you change the wiring using UPOCC with Teflon, or cotton, dielectric and stick with the same gauge as OEM, how could anything negative come of that?
I think where people may have had negative results would be by changing the wire gauge in the high frequency paths.