The only safe course of action will be seeing if the changes brought by 2.0 are enough to at the very least maintain the current players base. Then, should the game gain enough traction try to (very carefully) expand until the game has gained enough momentum and profit to expand further. And considering this is a (very rigid) Japanese company this is probably as risky as it will get. They tested the waters with the change to P2P a few months ago, and again with the new content and polls. Both which suggest it is all an indication of a very cautious approach to salvaging the Titanic without compromising even more resources needlessly into a lost cause. Had the sub numbers dropped enough, and if people like me hadn't gone back to the game and paid to resub and enjoy the game at least for a little while I'm pretty sure the game would've been shelved faster than you can say kupo, Kupo.
PS > Hopefully they will at least learn from their past mistake and have the foresight to setup assets so they can be ported painlessly into a new engine should the game become successful enough to warrant a PS4 or multiplatform port.