Request for "light threads" like Slack

I like Ryver's Topic implementation, but having recently migrated from Slack, I feel that having to "quickly reply" on a message without having to create a long-live Topic is definitely missing to Ryver.

In the past when using Slack, I liked some discussions started from a message which was not flagged as "important" like we would do with a Topic.

I really see such "light thread" as an added value to Topics, both could live independently.