HomeyScript: Any sane ways to use args?

The intended use case is building a JSON to be parsed to for example HomeyScript, without having to place a Card for every single JSON Property, but in a way that is fullproof.

The redundant input fields are optional, no need to be set.
Just like in [APP][Pro] Advanced Triggers or in H.O.O.P. (Hope) - Homey Object Oriented Programming.