Allow User to Expand Left Sidebar
I have a lot of clients who are using HubSpot as a CRM and the #1 complaint is the UI on records. The most important information for a CRM user (customer service, account manager, etc.) is the record's data properties, not the record's activities.
I know this view works for marketing and sales teams and don't expect it to be changed, but an easy compromise could be to allow the user to expand the left column to reduce the size of the activity feed.
This would also help with accessibility issues that I know a lot of people are dealing with trying to find data in a narrow column with small font.
Give me a little double arrow and let that user drag that column in and out, please. 🙂