Devil's Third is coming next year. By the very same guy who created your beloved Ninja Gaiden. Granted, it's a TPS/ character action hybrid and the first gameplay demo looked a bit rough, but we'll see how it turns out. Tokyo Vikings reportedly made massive improvements since E3.
Also, regardless of sales, I think Bayonetta 2 was ultimately worth it from a PR and marketing perspective. I wouldn't be surprised to see a third one, I'm sure Nintendo signed an option with Sega and Platinum. And really, it still easily outsold any recent Fatal Frame title, yet Nintendo continues to produce those games as well.
Also, regardless of sales, I think Bayonetta 2 was ultimately worth it from a PR and marketing perspective. I wouldn't be surprised to see a third one, I'm sure Nintendo signed an option with Sega and Platinum. And really, it still easily outsold any recent Fatal Frame title, yet Nintendo continues to produce those games as well.