Something akin to "Smart Groups" in JamfPro. AKA a method to scope scripting/app deployments to only nodes that, by definition, need it.

Puppet calls this Idempotency

Ideally we'd be able to create a "Smart Group" in SimpleMDM to show us all machines running lower than a currently desired version of application X. We could then target our deployment to said group. As the deployment delivers, nodes drop dynamically out of the "Smart Group", as the deployment has satisfied the requirements we have defined.