All.net+multi is the equivalent of Nesica, from what i understand the game supports payments through it, but i'm hoping that the game can just run without a network like SSF4 does, and like MBAACC does.
Typically, the only reason to really go online is just to get patches. And hopefully, we can just piggyback off of R1's All.net servers every now and then to get a patch, since they have an actual Japanese all.net server located in the US for Project Diva.