Have been trying to use Signal in a way that is “slackier” where a specific set of group DMs are named like #slack-channel style. And one group has a short custom message retention period, and the other does not. It’s the kind of thing where with Slack having an entire workspace for just DMing one other person doesn’t always make sense (overkill). But in Signal it fits – kinda. 

What would make it fit more is if I could select a couple of DMs from the list on the left (I am a Mac desktop Signal app user, and nowhere else), and have those groups/DMs/proto-”channels” live together as a visually differentiated set, indented, with the ability to name the cluster, and collapse or expand it. Small change that would make a big difference.