Tasks Vs. Chatter Post for Internal Use

Hi! Would love your input on this:

Previously, if you wanted to notify a User something regarding a record, you would use a

putting Chatter front and center.....has anyone switched to using Chatter for internal notifications even if it is a to-do?

Example use case: User wants to be notified when a member resigns so that they can write-off outstanding pledges.

Chatter Pro: Creates a single post on the record. Users can collaborate via comments.

Chatter Con: There is no way to "complete"/close out a chatter post. Also no way to aggregate Chatter posts that you need to address.

Task Pro: Task is marked as completed once done. List views etc can be used to track Tasks.

Task Con: Creates extra records (clutter) in the system.