I found using splitters and mergers to be a little frustrating simply due to the size of the components.
I'm going to use Factorio as an example (I know this isn't Factorio, but the developers of Factorio got belt logistics basically perfect - so it would be stupid to not reference it).
In Factorio, a belt is 1x1 and a splitter is 1x2 - or 100% bigger then a belt.
In Satisfactory, the splitter is essentially 3x3, or 900% bigger then a conveyor. Not to mention that splitting a line forces you to then send a new line out completely perpendicular to the old one. This makes it extremely aggravating (and arguably impossible) to setup efficient, compact designs.
I would suggest these changes.
- A splitter should have one input and two outputs.
- A merger should have two inputs and one output.
- A splitter or merger should take up no more space then two conveyor lines.
- A splitter's or merger's output should be parallel with the input (instead of perpendicular) *Bonus* Make the output configurable - let the player decide what's best for the situation.
These adjustments will allow players to setup EFFICIENT and COMPACT and DYNAMIC solutions.