Changing the Start of the Fiscal Year on Relative Date Picker in Quicksight

I have a lot of customers who are using Quicksight for sales analytics. The problem is that most of them don't use a Jan - Dec Fiscal year. The "Relative Date Picker" is extremely helpful to filter data quickly, but can't be used in most cases because it is only based on a typical Jan - Dec calendar year. Is there anyway to change that (or can someone point me to where we can make suggested improvements to Quicksight?).