brilliances and highest ranked game play

Those are great suggestions @AussieJokes!
In the Diamond plan currently we have Insights which allows you to check some broader data similar from your suggestions, there's a graph with Brilliant, Great, etc, moves displayed by percentage & total number, and a graph showing your results by opponent rating. There's also a lot more of cool stats that allow you to use data from your own games to see where you're going well and where you could work a bit more to improve.