Add hashtags, subhashtags, tags, or linking to related policies.
Add the use of hashtags for specific categories and subcategories of topics which will help in searches and grouping similar policies. Ex: #socialsecurity #voting #immigration.
Also, add more use for tags so people can combine related topics and making searching for similar ideas easier.
I would also add a linking feature where people can link and collect similar posts of policies so we can see a list of related posts for the same or similar topics. The community can make links and surf related posts. This can also give the community a view of how much a topic has been posted and repeated. It also allows users to compare policy ideas of similar posts. By including having a numeric counter of all the links, we can also see how much a specific policy has been suggested and posted.