One persistent issue with buses is tapping them while still lane balancing. An idea for your mod would be to have a 'tap' version, which allows input/output from/to the side, lane balancing all connected output belts. As well, if two or more are set side-by-side, they are considered a single unit and all outputs are lane balanced. (An option to prioritize each lane would also be helpful, as players could then ensure that a particular branch always gets a full lane of iron plates, for example.) This would make tapping a bus both tidy and precise. Players could, for example, have a 12-belt-wide bus of copper plates that has a half-belt coming out one side while a second, full belt adds more to the bus.

Does that sound reasonable?