An Idea that came to mind...
So I was messing around a bit with in the Test World when I suddenly had this idea of the various Production Buildings getting a Speed Animation when going beyond a certain threshold.
In this example I was thinking about Speed Lines ( blue ) and some Sparks ( golden ) happening as it seemed the most suitable for the EM Plant. The Foundry could perhaps create a fiercer Glow for the various molten Effects, the Cryogenic plant perhaps develop Frost, etc...
Unfortunately I'm not versed in either Coding or Animation so there's not much I can do about that idea other than just pondering about it 😁