I have a problem with selecting periods as a user filter. 

In the beste scenario I would like to have to have a period filter like Google Analytics has of Datastudio (see attachment). 

In the KPI widget I "Group by "inquiry_date" on week&Year". It selects the most recent week vs. the previous week. No matter what is select as a range (a whole month, it picks the most recent week vs. the week before).

The KPI widget is configured as follows:

Primary -> Latest
Secondary-> % Difference
Secondary -> Previous

Is is possible to do the following things?

1. Let the user choose what period to compare with (previous) so the exact range before that range. Or last year, or last month etc.

2. Change the timespan with a user filter. At this moment it's fixed in the widget itself on "Group by". But sometimes I would like to compare weeks, then months etc. Why i only can set this fixed on one of these values and not dynamic? So is it possible to make a user filter the selects date ranges in stead of fixed values?

Summary
I would like to have a period filter that:
-Can select date ranges (pick exact that range)
-Can select compare to (range before, range before last year).