I just wanted to add that I do have professional WebApi, Angular and JQuery work on my resume, but the big thing that seems to be the blocking point is MVC. I don't code traditional webforms development anymore (I don't use controls anymore, it's more JS calling json services), but there's no resume-friendly name for it because I'm not using a specific framework, and I'm guessing that to an HR person, all that means is "not MVC".
It's a crap-shoot on which technology is going to take off. Microsoft was pushing heavily that MVC was just another way to do things during the events I went to. I tried to push the boundaries of what my company let me work in, and that just happened to not be where the market went.
In hindsight, keeping my eye open on the job market is something I should have done more.