You know, it's a damn shame. I too have been an avid opera user for years. I have also gotten many people to switch to opera. I have tried other browsers since the release of opera 15 and so on and none of which come close to opera 12's functionality.
I'm really trying to stay hopeful. I really am. But with every update, I lose more and more hope for Opera's future. I was under the understanding that they would re implement old features, but it hadn't been happening. I have a laundry list of features that I use everyday in Opera 12 that are now gone. Every time a new version is released, I install it, open a new tab and try to right click and scroll through my tabs. After that fails, I press f4 to turn on the panel, which also fails. Then I uninstall it and try again with the next release. It's a never ending process, and these are just two basic features that I need just to get started with my browsing.