Better support for long-running topics?

I feel like with our weekly recurring topics, comments are getting posted all over the place. For example, if you want to read about what people think of a particular game, it's going to be spread out among a lot of different topics.

It seems like it might be nicer if in the games group, there were one topic for each game? Similarly for movies or books, or creative projects. This is how we did things on the Well, though there was also a "movies that didn't get their own topic" topic. But it seems like that was a limitation of a system that didn't deal well with having lots of topics in a group.

To support this well, we'd need to make coming back to long-running topics more pleasant to read somehow. With a linear conversation the software can start you off wherever you left off. I'm not sure what's best for threaded conversation?

In short, maybe there should be a way to do things more like forum software and less like Hacker News or Reddit? Or should we just try it out without changing the software?