No worries, like I said, I’m the king of derailing conversations 
So I’ve been thinking, and to expand my original response to OP:
In addition to JavaScript-y stuff, I am also trying to concrete my use and understanding of a PHP framework or two. I’ve used them before, and understand the basics of MVC, but I’ve never really… owned one, if that makes sense. Enough that I’d be willing to say that I’m better with it than without it, or to teach it to a novice. I’m working on a Laravel side project at the moment, and we’re going to make a concentrated effort to really optimize things as much as we can, find interesting third party additions, and really think about what we’re doing and how. I also might take a look at another. Can’t think of any other particularly awesome development goals or general learning goals I have for 2015…