Not defending SE necessarily, but what magical solution do you have for them? They try shaking up the usual formula here and there. Changing how everything is too much will very likely not end very well. You can tell they are trying to throw new things in rather if they are a success or not. During 3.0 we have gotten Diadem, Aquapolis, and the upcoming Palace of the Dead.

You shouldn't be asking for them to change up the entire formula, because lets be honest, it is fine and I don't think most here want to see the formula change. You should instead keep giving ideas for new content that works in the context of this game. It is silly to say they are not trying to shake things up a bit. It hasn't worked in their favor each time, but they are trying at least.

Not to mention, it is hard to break formula when your community expects a major patch from you every 3-4 months. I do question a lot of decisions they make, but I understand why they develop the way they do. Just they do not balance the content and community very well at all.