I finished the demo. Very nice and good game. A must buy (when I have some more money, that is). My only complaint is that the demo is way to short and ends just when the game gets interesting e.g. with a cliffhanger.
The demo showed that it is possible to make a game in which there no fed ex quests, I agree. Most (or all of the) quests in the demo have been connected to the storyline and plot. Even if the game seems fairly easy it should be noted that it is not. Just because you can jump right in and play the game does not mean the game is (too) easy; challenging and fun at the same, it seems, can be achieved.
I, too, was worried that this game would be way too cartoony. It is not. It has a vibrant, stylistic colurful, living world, with believable characters and some good, and yes, sometimes great dialogue that'll surprise you. Characters will say things you don't expect...