Unfortunately every feature that you want doesn't include trackpad gesture navigation. I just want to be able to navigate back and forward using 2 finger swipes like every other browser allows me to do. It seems like a small thing but it is the muscle memory I have. Not having it eliminates Vivaldi from my consideration. Also not a fan of how quickly it kills my laptop's battery but I might be able to over look that.
This might be an OS difference, but on Mac or Linux I can use a two finger swipe to go back. (I can also press with two fingers and move in order to trigger a mouse gesture, which other browsers do not have.)
According to Vivaldi this feature was added to the development pipeline in May of this year. It doesn't show as implemented. It hasn't worked on Windows or Linux for me as recently as last week.