@megabyte - I agree with your post but would add that in my world bare copper is fine too as long as you clean it occasionally.
@logistics
There are bigger fish to try, such as upgrading to better quality electronic components within your current equipment.
Absolutely, but if you read these forums, you will find that audiophiles fry very small fish quite frequently.
@tommyu - I have seen that info from Furutech and even though they offer unplated options for AC plugs, and IEC connectors, it seems their preference is for plating, and they seem to like rhodium over gold for durability reasons. They indicate that erosion and gold dust build-up occurs over time with gold-plated connectors, which must be rectified by occasionally disconnecting/reconnecting the connections. Oddly, they don't mention cleaning them. They do address perceived sonic differences between gold and rhodium. I have used their gold-plated connectors for years with no issues.
Cardas also appears to prefer a silver/rhodium plating and seems to have stopped making their gold-plated and bare copper GRS U Spades (at least I cannot find them on their website).