I'd like to be able to either paste in my own queries to build a report from (a la PowerBI) or, better yet, be able to access some of the code for your existing queries so I can make custom reports in PowerBI. (For instance, the Longest Running Queries summary tile is extremely limited at the moment, if I had the code I could quickly make it in PowerBI and make it do what I wanted.
I understand its Red-Gate code and therefore you'd want to keep it to yourselves, but it would deeply expand the reporting features and make the product immediately easier to sell to my management team (who are constantly looking for more and better reports)