Mark and keep? Close and archive?
Isn't bug-voting and a Community thread to talk about it enough for getting attention and show how much interest exists?
Example: Brianstorm1 proposes a mulitusersystem. Brainstorm2 needs a multiusersystem to get their solution working and people start to integrate it within their solutions, what may cross the whole Brainstorm1 where also people are working on solutions. Should we merge these or link them to prevent working on one topic in different directions?!