I would suggest an idea to improve date slicer.
It could be beautiful if you could set start date and end date of the slicer with a value given from a calculated column or measure.
For example, it could be beautiful if you could set
Start Date = NOW()
End Date = Start Date + 15 days (or Start Date + 30 days, or StartDate + 7 days... And so on )
End Date could change dinamically based to the Start Date Value (NOW()).
What do you think about?