Now that I actually understand what HS meant in OP thanks to Ebon and Kringle, I think I can clarify some of the issues Esfalsa raised based on the RL approach.

(08-19-2022, 03:58 AM)Pronoun Wrote: Like, it's good if the Assembly starts getting more engaged with oversight of the executive

That would be more like a select/special Committee, same with your "whole Assembly issue" one. They exist for a specific issue related to any office breaking the law, inspecting them and giving back the report. The Whistleblower Protection Act which we have already hints at such a thing being an obligation of Legislators when they receive sensitive information.

(08-19-2022, 03:58 AM)Pronoun Wrote: committee for a particular policy area ends up pretty inactive

Now that's a "Standing" Committee, or just...Committee. They usually are inactive and exist as sort of "working groups" when the Assembly wishes to address a specific topic.
Such a Committee would be (off the top of my head) a Regular Committee for General Law Revisions, which would help legislators when they express the wish to modify a certain general law or its segment.

(08-19-2022, 03:58 AM)Pronoun Wrote: line between joining a committee for a policy area and joining the ministry for it isn't all that defined

The only Committees that I can perceive existing here is some sort of "Petition Committee" where it formulates and pinpoints which enacted policy they would like more information on or made revisions on.