I would add this: It's about expanding the scope of what constitutes a form of harassment. For example, think about microaggressions that could be used, and how those can impact folks.
Also, use conflict resolution training so that these matters are part of the new policy and training on how MPs can handle issues among themselves. The training should have a trauma-informed lens with a gender-based analysis for perspective.
We also talked about bystander intervention, peer support and things like that. These would be very helpful to ensure this is effective.
It's also about having an open door policy. We talked about not having a term limit. You need an open door policy for these complaints, as well as a neutral party who can resolve matters.