Recently Opera released an early access version of the Opera GX browser specifically targeting the Gaming community and I believe there may be some valuable features that Brave can benefit from.
For example, one feature that would be very useful would be Resource and Network limiters on the browser.
The use case for, specifically the Resource limiter, is that Chrome and Chromium based browsers have a very large resource (specifically memory) footprint. Allowing users to specify how much resources the browser can access would make multi-tasking on lower-end hardware easier and also prevents resource hogging by the browser.