Reading this and the responses that imply Slack is not for people who would belong to many teams or are prone to distraction, it’s clear Slack does have a problem or two — albeit “happy problems”.

Here’s what I’d like to see Slack do:

1. Reply to button and other means for threaded conversations
2. Removal of the default “water cooler” #general channel. It’s just asking for trouble! (Admittedly, group admins can rename this to a specific topic, but they clearly need better prompting to do that.)
3. Column layouts like Tweetdeck or kanban boards employ, thus enabling much quicker perusal.
4. Grouping of teams so you can manage notifications across multiple teams at once. You might have a work team or two that you only want day time notifications, so put them in a team group. Whereas you might have some developer groups you only want notifications from outside of work hours. As Slack becomes more and more used as central point for discussion groups, not just work teams, this is going to become essential.
5. Single sign on. Let me just register with Slack, and then use that sign on to join any group.

Slack was created for work teams but it’s being used much more broadly than that. I’ve even seen people using it for family groups to stay in touch — for which it is ideal.

Facebook was started for college kids. Now it’s used by everyone and in ways never envisioned at the start.

Slack is reaching that point too. Slack has some “happy problems” to address. :)