We are constantly running into the need to conditionally execute steps/commands based on conditions that can't be evaluated ahead of time (and so can't be constructed in the dynamic workflow, which we are using).

The most frequent case is (we frequently spend ~60 seconds saving a large cache that is identical to the one that was loaded), but it would simplify our build substantially if we could supply a parameter to a step and have it evaluated. Or if we could write a command that, in one step calculate a decision and then decide to skip the rest of the _command_ (not the job).

I see prior suggestions along these lines that were told to use dynamic workflows, but we're one of the most thorough users of that feature, and it doesn't suffice here.