Do you think these will become the accepted "norm" in future?
I think you'll find that 90%+ of the PPLs who fly any significant distance will do so with the aid of GPS. I think you'll also find that 50%+ of the PPLs that are fresh out of training will not have learned how to use a GPS effectively.
In my opinion (but I'm sure that a lot will not agree), effective use of GPS should be a mandatory element of PPL training, and possibly even a mandatory element on the final skills test. I was very surprised that we recently had a discussion on here whether GPS was *allowed* on the QXC. In my opinion, it should be required. Even if it's only used to warn for CAS busts, which still happen way too often.
In contrast, if you do your regular car driving test in the Netherlands these days, demonstrating competence in the use of an in-car navigation system is now a mandatory element: Part of the route you need to drive on the exam will be GPS-based. Simply because studies have shown that most drivers will use some sort of in-car navigation, and in-car navigation has a significant safety benefit (and environmental too). But it takes a while to learn how to use it effectively. That's why it's now a mandatory element of your training.