I don't think it would be worth it to go through all that trouble. If the banana's aren't tight enough to form a good seal, you should be able keep things sounding OK if you use contact cleaner on the banana's and the binding posts on your speakers. That will keep oxidation to a minimum.
Ever replace straight wire speaker cable connector
I have a pair of straight wire serenade speaker cables, 10 feet in length that are terminated with Straight wire locking bananas on both ends. They do not get as tight as I would like them to be. I am thinking about changing them to WBT brand spades. I would like to know if anyone has ever switched to WBT spades and if you had good results. Or any change in sound for better or worse? Also what are your thoughts on hurting the resale value of the cables? I may just sell them and purchase a speaker cable that is already terminated with WBT connections, if it hurt the resale value of the cables down the road. I do enjoy the straight wire sound.