As someone who's been a longtime Opera user before switching to Chrome (buggy release around 10.x, weakening site compatibility) I'm so glad to read this. This decision shows the quality of engineers who work at Opera - not afraid to throw a huge chunk of code away if it doesn't serve the company anymore the way it was intended. Thinking about it I can't make up a single example of a large software house doing such a thing.
Looking forward to get my neat features again, such as fast forward, hotkey bindings, Opera turbo..