I wish Cass is batgirl in the DCnU, Barbara is Oracle (crippled or not), and Steph is Spoiler.
I think that would work a lot better then erasing Cass's and Steph's time as batgirl (which would change Cass's character much more then it would Steph) and erasing Oracle...so to speak. For all we know Cass and Steph have actually been erased like wally, then just being changed by the DCnU.
It's not worth it to cause all that destruction/changing/erasing of continuity just for DCnU batgirl. Is it really worth it to you? What do you think?
Even if DC is not going to make Cass batgirl in the future at least they shouldn't erase Cass's and Steph's batgirl history. Perhaps they should have made it, so that in the new DCnU continuity Barbara could have done her time as Oracle like in the old DCU, and then become batgirl (this would also preserve Cass's and Steph's time as batgirl).
I don't like the idea that Babs seems to have been the only batgirl in the DCnU. Im sure the people who see babs as the "ONE AND ONLY TRUE BATGIRL" don't mind it, but it really is a disservice to cass and stephs hard work into being batgirl.