It will be great if there is a feature on the 'Manage filter' page, which allow user to bulk delete saved filters. Some user might have more than 100 or 1,000 saved filters, it takes too long to delete them one by one when it's not useful anymore.

Also the same feature needs to be extended to boards, dashboards where users can delete the unused dashboards, boards, filters based on certain timelines to clean up old/unused data. This will be very helpful feature.