> I usually just put a few splitters before and after tapping off of main bus lines

You are literally describing balancing. You are using an ad hoc solution as opposed to a blueprint, which can be fine, but I wouldn’t dismiss the convenience of being able to belt off a line of variable consumption from your bus and then guarantee each line down the bus will continue to have a fair flow of components. You clearly appreciate that this is desirable, and are solving for it in your own way.