It would be helpful to have a storage container that has a setting for max amount. Like 100 microprocessors is plenty for now, so I don't need a completely full container and that tool can go idle.
Here's an example: modular terminals. They need THIRTY TWO micro circuits (MC) per. But right now, in the game, I only really need a reserve of about 40 of them. So I should be able to attach a storage container to the output, set that "Max Amount" to 40 and just leave that priority on that fab to normal. That way the fab will only be used whenever there are 40 MT in the storage (plus whatever is on the conveyor). That way the rest of the MC can be used for other projects. I need MC for a lot of other projects.
As it is, when I have enough MTs I have to disable the MT fab, which is micro management.