HI OP i have written a post along the lines of what you are saying, Opera has been a mess the last good version was 12.16 it was simply THE BEST and could not get any better.
Now it they have destroyed what was unique to the internetting world. I cant use any of it to my advantage. So now i use Firefox and Maxthon.
https://forums.opera.com/topic/3041/has-opera-destroyed-their-own-brilliant-creation/1
I remember 12.16. The Windows 7 Opera was the best. Thanks!