you mean like on this '70s jazz, where you can see how the G saddle has slid over, and also how the string spread is just a little narrower than the pickup magnets?I've been using the stock bridge on my Mexi-Jazz and it works, sounds, and feels just fine. I don't usually "fix" things that ain't broke or deficient, but that's just me. BTW, once there's tension on the strings, the saddles aren't goin' anywhere, they stay put just fine.
i don't want to overstate all this, as it's not really a big deal, but it's not nothing, either.