I think the flying error message was hard to read, even in the FFF. This is probably due to the fact that it was moving across a chaotic background. I think NOT animating the cursor would be worse, though. Consider a soft shadow behind the text to increase readability, or perhaps increasing the font...

If we get event-based signalling and the ability "pulse" outputs, then I'll want inserters/assemblers/anything-that-does-an-action to be triggerable on pulses. Example, an inserter in front of a full belt would start the move operation when 'triggered'. (It probably gets stuck if it can't ...