My "View All" notifications page gets blocked up very quickly. It would be massively helpful to be able to truncate the view into distinct Workflows, perhaps with Mentions/Approvals staying sticky, so that one workflow with a lot of activity doesn't mean I miss others.
A bit like conversation thread view in Emails, but with the Mentions and Approvals highlighted instead of the most recent activity on a workflow.
As alluded to in this idea, it would also be helpful to filter by activity (mentioned, email received, approval required etc.)