Sickness Absence Reporting - Columns & Filters/Drill Downs

It would be useful if we could have the option to add multiple columns of the same area into a report, as currently this can only done via multiple reports. Further filters/drill downs into this would make reporting more insightful.

For example:

Sickness Absence (Days) area - Short term absence (less than 20 days filter) & Long term absence (21 days or more filter). It would be even better if this would return the total sum of absence days per employee in that filter, or a total count of absences that fall into that filter category.