Addicting, albeit with some nagging flaws
Character movesets are also more excellent and free flowing, although some characters got an entire change (or at least it seems that way to me). But I'm sure Tekken Vets would agree that character FLOWS have not changed.
Load times... ugh. At the beginning, it always has to reinstall a trophy set, asks you which position you like (why can't it be a saved setting?), and fight load times are nearly unacceptable, especially when the final boss gets a cheap victory on you and you're just itching to pummel him in the face, or throw the controller out the window. Whichever comes first.
Online has lag, although I heard that they were fixing it. Although, overall, online works as it does in SC4--with great choices.
One minor gripe, Tekken really needs to create characters with other unique fighting styles rather than squeezing in characters with either mythological fighting types (Raven), or technologically improved thingamajiggers (Alisa). Bob is a rip off of Rufus from Street Fighter 4, and the other new characters, you can't even tell what their fighting styles ARE.
In spite of the flaws, once you start playing this game, it'll be difficult to let down the controller.