I’m really surprised there doesn’t seem to be a modded (or vanilla) splitter that lets you set the output ratio for each side. I saw one that lets you configure the rate of output, but I’m not sure if it’s updated. Regardless, a simple thing like “this side gets 1, this side gets 3, this side gets 0” would be so useful for building manifolds that don’t take forever to balance and other stuff.
Sounds like you’re looking for this: https://satisfactory.wiki.gg/wiki/Tutorial:Prime_splitter_arrays
Obviously these aren’t single-unit configurable splitters, (which would be nice, I agree) but with blueprints they come fairly close.
Yeah, I’ve stumbled on those, and it’s nice that folks did the work (I’ve even seen tools to calculate arbitrary n:m splitter/balancers). It’s just be nice if programmable splitters could do it in addition to everything else.