You can now use simpleController to apply timers, listeners, assertions, configs, pre- and post-processors to parts of a test plan!
Check the updated user guide section for more details.
Thanks to @ben-norton-anaplan for the contribution and @FakeLogin @andy-tarr for helping with design decisions.
Additionally, bridge service now supports deserializing properties which require multiple invocation of property methods (like rampUp in threadGroup).