I just continue whatever conversation is going. I might add a bit to my posts, but I think it's within reason to expect topics to shift. With so few people, it almost feels like we just need a singular chat and just catch up with whatever page you left off on.
No new cards to discuss strategy about. It's just a community talking about anything. Sure, having an Anime forum and deck forum makes sense, but here in General chat, I don't think there's much wrong with a topic covering everything in natural progression. It should flow like a conversation. New topics of interest can get their own post for further discussion, but whatever is most active should just...be active instead of trying to stifle its flow.