Canadian Politics Today

This sounds like an excellent modification. We will see how it works in practice, but it seems to solve many problems. If you really want a topic, then create it and those who are interested will participate. You are responsible for handling trolls yourself. Over time we will see how individuals moderate their own topics, and then we can decide if we want to participate in any of their future topics. In a small forum like this (where we know everyone) it should work out well, although it may not scale to a large forum.