TL;DR
Let splitters be connected to circuit and logistics networks for automated control.What ?
Imagine being able to set a splitter to change input or output priority or filtered item based on set circuit signals or logistics network conditions.I see this working by allowing for 3 signals to be set, one for input priority (true/false = left/right, configurable for which), one for output priority (true/false = left/right, configurable for which), and one for the filter item (takes the signaled item and sets it as the filter).