There are several ways the different cities could coordinate to make for a more seamless riding experience for people trying to get around LA:
1) universal pass card. LA metro and Culver City already have the TAP, so Big Blue Bus just needs to get on board to save time and hassle trying to figure out multiple fare systems;
2) coordinating stops. I take the bus on Santa Monica Blvd a lot, and there are often 5 of us standing at the stop waiting for Big Blue Bus #1, and then we see that LA metro 704 is coming, and we all have to run across the street to that stop to catch it. Why can't they both stop on the side so that riders can take whichever comes first?
3) Coordination of service. If more than one line is running the same corridor, the agencies should coordinate to make sure their buses are spaced to provide maximum regular service (ie: one bus every 5 minutes, whether it is Metro, or BBB, or whatever).