I like seeing new graphics, new animations, new skills as well. Fun to look at.
I can't understand, however, why they spend so much effort on new characters nobody is going to use rather than adding things to minimize the game.
All those man-hours spent on art could have been spent on adding dungeons, random quests, PvM guild boss, older character rebalance, runes 2.0, ...
Isn't 75 enough?
Eventually, the ideas for character skills and abilities will run out and the only way to create an interesting hero will be to have it possess a skill 'Kill or be Killed: Destroys the entire Enemy Team unless killed before unleashing her ultimate power