Even if they aren't private, is there a way to limit who gets notified? Because like you said, there are some conversations or channels within a group that only pertain to some members - and the whole team doesn't want to get notified. We shouldn't have to create such granular teams to avoid spamming people with unnecessary noise within their own team. As a use case: my "team" at work consists of a sales manager, a few sales reps, sales engineers, consultants, etc. Some conversations I have about certain accounts are specifically relevant to the consultants and to myself (the account manager), the entire team isn't interested in that channel. Though, if we wanted to pull someone in or to notice the conversation, we could just '@' them. The channel would be open, so anyone can go in and see our conversation (like a manager) but they don't want to know everything... So if you could choose "primary team members" for a channel so they get notified to activity but the rest of the team just has passive access.
