TeroRe Scope of the current support on Community-Slack integration is primarily to deliver a community member's notifications on the brand's Slack workspace. As an additional channel in addition to the pre-existing modes such as email notifications. In that sense, yes, this is a good way for the stakeholders to stay on top of community conversations while remaining on Slack. In addition to receiving these notifications, they can also undertake simple actions such as Kudo and Reply right from within Slack.
Support for additional channels on Slack each corresponding to different nodes in the community is not something that is available today. For example, if certain stakeholders in your company want to be notified on new ideas being submitted. It is an enhancement idea that we have in our backlog. Will plan as a future enhancement.