Rework Conveyor System AI
The conveyor system AI places a massive and poorly scaling load on the game with even medium sized grids. This is made worse by assemblers drawing fewer resources than they need to complete the selected task and therefor needing to draw resources frequently. The current conveyor system AI is notably worse in redundant network situations, which punishes players simulation speed for using good engineering design methods of fallback methods.
While not as flashy as new blocks or a replay feature, an improved conveyor system, possibly with a DLC inventory management block if a clear profit model is now necessary, would be an amazing improvement to the game.