I believe factorio has a colorblind mode

But i completely agree, whenever i'm building something more complex and something is connected in orrectly, it's easier to tear up the whole thing and starting over than trying to track down the incorrect connection...

Agree it’s an issue, but in my builds most of the complexity in telling how things fit together is because of chains of several combinators.

It looks like the update is going to allow for much more complexity to be expressed in a smaller number of combinators, which should mitigate the issues somewhat.

As a software dev, the biggest thing for me in this update is that it makes combinators more like how I think of things in terms of programming paradigms. When I first came across combinators, I tried to treat them like logic gates. Eventually, I realised they’re a different thing entirely.