No not really. The quality of her music hasn't increased and she hasn't improved much as a performer, but that's just my opinion. I'm sure she thinks otherwise.
it seems that she has taken a step back in almost all of those aspects except for her vocals and arguably her music. I really enjoyed the album Artpop it was just handled in a messy way with lack of promotion, wrong single releases, lack of videos and far too alienating and polarizing performances.
I honestly don't know. It doesn't seem as natural so I'm inclined to say she hasn't grown...but I actually think her productions have become more experimental and I think that this is just a transition into a different phase of Lady Gaga that will see more success and confidence. She's just taking her artistic career for a test drive.
Has the quality of her music increased? NO
Has her performances become more compelling? BECOME WAY WORSE
Has her dancing improved? NO
Has her voice and vocals developed? Yes
I don't understand how anyone can say that she has grown as an artist. That's just a self-drag, and a massive insult to the flawlessness that was The Fame Monster era. Heck, everything from The Fame to Born This Way was better than the ARTPOP era.