disfunction icons on the production buildings

Now, game shows icon that building has no electricity. It would be nice to have similar warnings for other misfunctions. For example if building cant operate because of exhaust, or slags have piled up or it does not have recourses.

Yes, at least once I've asked for a functionality similar to that added to Factorio by the mod Bottleneck, where you can toggle small coloured indicators that show you if a given Building can't function because it has Output Problems or Input Problems.
Of course, an important difference between Factorio and CoI is that in Factorio, industrial processes almost never produce waste products, but only directly valuable stuff.
In essence, CoI Buildings has two kinds of output buffers: Valuable Stuff output buffer, and Waste output buffer, and it'd be nice to have a different warning colour for each.
Say, Red dot for Missing Input, Orange dot for Waste Output Buffer clogged up, and yellow dot for Product Output Buffer is full. Unlike in Factorio, where you just use red and yellow (and a green dot for Buildings that are operating, but I always change that to invisible, because I don't like the visual).