Describe the Suggestion

Allowing Contraption Controls to be toggle with a redstone signal would be a nice feature.

How it would work:

Placing a redston link on one side of the Contraption Controls invert the signal when powered.
Cases:

• Contraption Controls is on, redstone off : run normally, filtered contraption actors are on
• Contraption Controls is on, redstone on : disable filtered contraption actors
• Contraption Controls is off, redstone off : run normally, filtered contraption actors are off
• Contraption Controls is off, redstone on : activate filtered contraption actors

Screenshots and Videos

In the linked screenshot you could imagine a setup with redstone contact to activate or desactivate the redstone actors while redstone contact are touching the contraption.
The following screenshot is a proof of concept for a menril farm scalable in length and width.

Additional Context

Here is why:

Want to make a Menril tree farm but the ground has to be a 3x3 but you have to deploy only 1 sapling in the center of each patch ? now it's possible.
Want to build a castle wall with a repeating patern on top ? Use a clock with redstone links and now you can.
You want to make a floor with a checkboard pattern ? Now you can.