They really need to work on making an easier transition from Chrome if they care about converting users. Add an out of the box (preferably default) option to make the tabs look normal and not ugly like they are now. Change the private window shortcut to Cmd(Ctrl)+Shift+N like every browser has standardized on. Also I swear they override the normal text input behaviour, specifically if I'm using option+left/right arrows to jump between tokens in the URL bar, it jumps my cursor to unexpected places, like at the wrong side of periods.

Tangentially related but I also find their devtools very lacking compared to Chrome's. They should straight up rip off everything Chrome does in that department.