Set Quality filter from circuit signal - including from Constant combinator output

[reduke]

As per title, when setting Quality filters on Selector combinators, it would be very helpful to be able to set the quality criteria based on circuit inputs, especially from a Constant combinator - which at present isn't even able to output just a quality on its own.

Use case: Setting multiple combinator's settings from a central source, or re-programming them dynamically from the circuit network as conditions dictate.

Thanks