Possible, not hard, costs money and won't help a single thing.
dld
Well... that depends. If one has a cue he/she really likes, but it has a very proprietary joint, it makes getting spare or replacement shafts that much more difficult. Invest in a joint/pin change to a more commonly available / standardized one, and problem solved.
-Sean
Each joint has a different weight, and should affect the balance of a cue. I've tried cues before in different joints and couldn't tell the difference.This is a good point. People should choose their first joint carefully, because it does become a factor in future purchasing decisions. My first cue was 5/16 x 18, and my next spare shafts were the same, and my next cue, and so on.
As an engineer, I haven't figured out how joint style could really affect performance, but I know there are lots if folks who believe it does. To each his own.