One thing I'm not sure is possible, but if it isn't, I'd love if Opera add this feature, the ability to customize which extensions are active or deactivated on certain websites. I'd really love this because I use some websites that don't allow add blockers, so I have to deactivate and reactivate them all the time, which is a real hassle. I thought, why not create a panel where you can choose whether some of your extensions work on a particular website or not? I'd love that, and I think it would greatly improve the browser.