I ditched the rosewood bridge on mine too. This one is all brass (the base is plated to resemble the original) with a big sustain block, made by Marko/MPU back at the old place.
I still want to grind down/reshape the tops of the saddles a bit. I had to notch them pretty deep to get the action to sit comfortably. The action was really high with the original bridge laid flat. I think this bass could benefit from a neck reset! The new bridge just conceals the need for that since it sits lower and I was able to cut the slots so deep...
The swap also helped resolve an intonation issue with the G, as that saddle was at its extremity and required additional travel to intonate correctly. When I routed it for the new bridge's sustain block, I repositioned it slightly to allow for the adjustment.