I'd like to suggest removing closed questions from proposals a certain number of days or downvotes following their closure.
With the increased number of questions required to get a proposal into commitment its hard to wade through the closed posts sometimes to find good questions to upvote. Its also distracting from the potentially good content on the proposal.
Suggestion: The likelihood of someone trying to revive and A51 question is abysmally low. Why not just have them disappear a certain period after closing. At the very least put them at the bottom.