Ah, more on the heavily modified 1970s Gibson EB-3.  A combination of a low neck angle and poor design of the original 2 point bridge made it the ideal candidate for a modern upgrade.  As you can see from the photo above, the two maple wedges were an attempt to keep the bridge from leaning forward.  But leaning issues aside, the action could not be lowered any further.  In comes a Hipshot 2 point Supertone bridge to help out.  It has a lower profile and it's machined with far greater tolerances to maximize sustain and allow for proper action and intonation.  I agree that it does change the vintage vibe of the bass, but if you value playabilty over vintage-correctness, this is the way to go.