First of all, "Sophisticated" is one of the best titles you could imagine. It fits the whole art very well, therefore it had to be mentioned.
Speaking about the title - this art is definitely not another "Hey I can draw stuff" drawing. And it's a good thing. Maybe it's because I like abstract art, or maybe it's just the fact that it looks great - I'm not really sure. I like also colors and shapes themselves. Nice for the sight, I could easily fit it on my wall in my living room.
The worst thing about this art is something that is just a matter of opinion - I'm not into technically perfect arts. This thing looks just too "pure", there is not much of human feelings in there. Of course when I see it I'm feeling something, but I'm not sure if I'm connected emotionally with the author themselves.