I'm not sure if many of you are familiar with Vanilla, a popular forums software. They have a cool feature "activity wall" which is a seperate place that you can just talk in without having to bump discussions to only say hi for example, mainly a place to avoid being warned for necrobumping and necroposting. Personally, I think it's a really cool feature to keep the discussions clean of unnecessary comments and also lets users interact more with each other. Would be glad to see it being adopted by the Flarum team.
If you don't really know what I'm talking about, just have a look over here: