Is there any plan to add flexible dates to Tableau in the future?
Tableau never comments on their future plans.
Or if anyone has any patch or solid workaround tips that could be automatically implemented to group the data better instead of manually added each time we create a new report or dashboard. It's getting a little tiresome.
There are most definitely ways of automating 'date math' such that your 'non-standard' fiscal years will be calculated without manual intervention. We will need a list of the rules, and the date field structure to help you develop this.