I really enjoyed the glyph system, and was bummed when they tossed it in the garbage. Plus, it made the inscription profession worth something.
Azerite - imho - is too much of a maintenance PITA. Whenever you get an upgrade, it could totally change your playstyle. I'm not a huge fan of RNG playstyle changes. I do think that if Blizz tried to streamline it a bit more and made it more flexible, then it could be more user friendly. The potential for being a great system is there....it is just not realized in its current state. Just my opinion