The recent change to be able to remove an entire category of custom triggers got me thinking.
Being a borderline hoarder, I hate to lose triggers, even if I'm not using them anymore. How about if ACT could remember if I collapsed a category? Then I could collapse those that I'm not using anymore so they only show one line for the category, but still retain the triggers. Adding or removing a trigger or exiting and re-running ACT would remember / restore each category's collapsed / expanded state.