the two deal breakers for me are 1) no menu bar and limited ability to customize and 2) inability to move tab bar. My default browser will never have the tab bar on top. Why do developers feel they need to dumb software down?
At least for me, the more options to customize the better. A tab mix plus extension would be welcomed. Using Pale Moon now, but will continue to follow Opera's development, as I very much like the VPN and ad blocker built in capability.
Glad I took a closer look and hope the two issues mentioned above will be addressed so I can change my default browser.