One thing that I would like to see brought back in Opera is the find(CRTL+F) that Opera 12 had. In Opera 12 and below, the screen would gray out and the word that you were searching for would be highlighted. Personally, I find the behavior in Opera 12 to be much better, since I can see the word that I'm searching for very easily.
Could this be brought back? Or at least have a setting?