I'll be getting my copy next Tuesday, just as I did when SCIV came out, and the Collector's Edition, no less. Soul Calibur is just a great fighting franchise. Every time I get a new entry, I pour over it for weeks after getting it. The only thing is, Final Fantasy XIII-2 comes out next week, as well, so this'll probably be on the backburner until I beat that. Yeah, some of the new characters are meh, I'm bummed Setsuka didn't make the cut, and Taki should've been left in over Natsu (it just feels like they wanted to update her look without having her age, so they just replaced her with someone younger to compensate), but Z.W.E.I. looks like one awesome character to use, I'm a fan of Assassin's Creed, so seeing Ezio playable is great, and Mitsurugi and Yoshimitsu are back, which were my two main concerns for the roster. Some old favorites may have been kicked to the curb, but I'm remaining optimistic. Besides, that character creator looks amazing. Hopefully it lives up to the hype.
As for the most irritating character for me to fight against in SCIV, it was Kilik. People would just spam his longest attacks online. With his reach, if you spam him enough, you can't get close. Of course, I can't fault him for it, as I used to use him, as well, though I didn't just spam.