[skydhash]

Two examples of complex user facing configurations I can think of are pretty trivial to implement:

- Decision tree, where you only need comparison operators. The leaves are a specified list of actions.

- actions list with macros (variables). You can be fancy and add some conventions for arrays.

Anything more that that should just be a programming language. And if the relationship is adversarial (saas), you should really think hard about needing something that complex.