Art style as a world building tool
It is widely believed good art-style is the one that is most pleasing to the eye, while this true to certain level art-style has more to it then beauty. Art-style when used properly can do more than just make an anime look beautiful . It can be used as a tool of visual communication and world building. For example the wacky art-style used in one piece perfectly complements its odd unrealistic setting, it also gives a good insight into the characters(Ussop is a liar hence has a Pinocchio nose,Sanji has tall legs signifying his use of legs as his weapon of choice). On the other end we have death note, it has a more subtle and realistic art-style suggesting grounded story,its grey tones are similar to that of neo-noir suggesting the vibes of the crime drama it is. So in this light exploring art-style as a tool that can perfectly compliment and complete the story is some thing that needs to be done.