Erin Stellato has a compendium of Query Store UserVoice requests:
In early January Microsoft announced that Connect, the method for filing SQL Server bugs and feature requests, was being retired. It was replaced by User Voice, and any bugs/requests were ported over. Sadly, the votes from Connect did not come across to User Voice, so I went through and found all the Query Store requests, which are listed below. If you could please take the time to up-vote them, that would be fantastic. If you could also take time to write about why this would help your business, help you upgrade, or purchase more SQL Server licenses, that is even better. It helps the product team immensely to understand how this feature/fix/functionality helps you and your company, so taking 5 minutes to write about that is important.
Check them out and upvote any which look interesting.