I've got some ideas for an interface request for efficient circuit network modding, but before I post, I'd like some more info on how circuit networks actually work behind the scene. I've got a pretty good guess, but correct me if I'm wrong.

1.Whenever a device changes its output, mark the network ...

Honestly, can we just make this fully general?

ALL circuit connection options can be selected to either red, green or both.


I agree.


but then someone will want to connect a red wire for ouput and a red wire for input, but another one not the same... no ?

and this would be problematic for ...

TL;DR
Similarly to to the "decider combinator 2.0" from FF#384, make red and green selectable as inputs or outputs for inserters

What ?
Basic QOL improvement to allow users to select which color of wire the inserter reads its filters from, or outputs its contents to.

Why ?
This will allow ...

About 30 seconds after loading this save, Factorio just completely freezes up, and any mouse input causes Windows to show the "not responding" Dialog. If I try to wait for the program to respond, it never unfreezes.

https://drive.google.com/file/d/1CF693kYeaziqoVy0MMA5Pv9LTOmzKqVj/view?usp=drive ...