Relative Date Filter in ETL?

D-Rab

Currently you can filter by Current_Date in ETL and in many connectors you can use relative date filters to pull last 7 days or between 2 relative dates to get a rolling report that doesn't require constant modifications. Can we add this feature for date filters in ETL? It would make things much easier if we can filter to remove last 2 days or last 3 days in addition to the current date option if a data set is always running 1, 2 or 3 days (or more) behind the current date.