I really enjoyed the Weapon Master mode in Soul Calibur 1. Best singleplayer fighting game experience if you ask me. It felt like a fairly organic way of learning the game and unlocking new content at a steady trickle, and it had a badass map. So yeah, I wish more fighting games had something like that.
Also, would really like a 'hotjoin fight' option ala Street Fighter 4 in Killer Instinct...
Overall I like it. It's nice, but not the same revelation that the DS4 was compared to the DS3.
Judging from the click noises the dpad makes, it seems to be 'true' 8-directional digital input now rather than the analog swivel solution of the 360 version. I haven't opened up the One controller though, so please correct me if I'm wrong.
I fucking love the triggers, moreso than the DS4 triggers even.
The only real bummer is the bumpers, as many other have pointed out, they are a blatant downgrade from the 360 controller.