In game overlay
Recently Vivaldi made features for a subsection of gamers cause not every gamer has a razer keyboard or headphone and the average joe who does spreadsheets don't have a Razer product.
So why not make a feature that all gamers can use, an in-game overlay for the browser.
I know steam and origin have browsers themselves but they are ok at best and garbage at worst, with this dedicated browser as an overlay we can browse the net when we are looking for those achievement guides and stuff like that while having access to a beautiful browser and our extensions.
I don't know if this is possible but I believe it's something me and a lot of other gamers would really like.