Add the option to filter by the time dimension in the filtering options. Ability to filter by months, years, year and month, or add dynamic filters for the last 7 days, 24 hours, or 3 months. This would allow adding charts for the last 24 hours vs. charts for the last 30 days within the same dashboard. It should also allow creating bar charts with time-series data or displaying top content from the last 7 days vs. the last 30 days on the same dashboard.