I think that American Wasteland will appeal to hard core gamers and skaters, but everyone else might not like it as much
The game has glitches here and there, but nothing that will severely turn you away from the game. Compared to the other games, its extremely fluid, unlike THUG 2 which felt clunky. Another cool addition is bikes, which are fun to ride and good alternative if one of the story missions is hard.
That brings me to my last point. The story mode in American Wasteland helps you a little too much. If there is something you need to grind, it puts you right in front of it, removing some of the challenge. Not to say the missions aren't unique and different unlike some previous installments.
I think that if you're a skater (me) and a hardcore gamer (myself) you will enjoy this game deeply. Everyone else will have a good time, but probably not as much.