Filter activity history in Company by contact.
This feature would be for everyone. When viewing a company in Hubspot, you already have the ability to filter activities by Activity, Notes, Emails, Calls, Tasks. Where it is lacking is being able to drill down further. For example, I would want to only view Contact 1's activity/notes/emails/calls/tasks from the company page vs viewing all available activites filters for every contact.
Having the ability to drill down from the company page by contact (linked to the company of course) and then by activity would be a great help in finding what previous actions have been made.