Every builder has their own ideas on bridges; every bass has its own ideas of what bridge works best, regardless of what the individual luthier thinks......
If you really get out and search around, there truly amazing works of art that people have successfully used as effective bridge designs. As well, there are some that encompass a ton of specialized ideas and intricate theory that are duds. The traditional bridge design is there for a reason- hundreds of years of luthiers working hard to maximize the sound have come up with that as a fine example.
I usually try a number of different models and ideas, but when I sit back and let the process go on autopilot when I'm building strictly for myself and not for someone else, they tend to come out looking a bit different than other folks take on it.
Since he brought it up, here is a link to one I think Matthew is referring to, just one of many that I've tried, along with some nerdy discussion of it if you read the whole thread:
james' bass build
j.