Here's an interesting bridge mod that I don't believe I've ever seen before. It doesn't appear that it would make intonation any easier, but if individual string height adjustment is your thing, well here you go.
It's been so long since I've seen one that I am qualifying this as "maybe or might be." Years ago Allparts offered a really nice Rick replacement bridge well made and designed to be easier to adjust the intonation with a bit more travel per saddle. I think ABM made them. This could be one on this bass.