It would be cool if T-junctions in pipes have a little window.
What?
Like some straight pipes have a little window, so you can see the content inside, it would be cool if T-junctions do the same. Only the ones that are pointing up would be sufficient. Maybe not every junction, but at least some.
Why?
It would be at least visually interesting to see and helps when not in ALT-mode or hovering over them to see what's inside. Especially when connected to machines or to see if pipes are not filled. Also when using many undergrounds or all pipes are a junction, it's visually a bit boring.
