Can we have an earlier tiny version of the "Big Slitter/merger"?
Just 3 studs.
Splitter: In > Out > Out
Merger: Out > In > In
................#1 > #2 > #3
(The #2 position has higher priority than the #3 position, just like the Big versions)
This would allow us to construct overflow systems MUCH more compactly, without having to stack a LOT of merger/splitters just to get a 1/64 chance (or whatever) to go into the desired machine instead of being destroyed.
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Alternatively (end-game item?), make the Splitter/merger block themselves be modular, so you can just "hook on" more "generic input" or "generic output" (1x1 blocks) to a "core block" and the splitters/mergers can then be both any size and any shape, with any amount of inputs & outputs (as long as they are added to the correct side of the "core block"), like:
In > In > in > (Core) > Out > Out > Out > Out
Maybe call it a "shift block" or something?