Well they're saying it's "developed by Team Ninja & Platinum Games" and calling it a "collaboration", so I'd be surprised if Team Ninja's part in it is literally just Yasuda. After having so much success with Nioh I'm actually surprised they felt they had to bring in Platinum at all, but all that aside it is LOOKIN good at least.
Yasuda is overseeing it completely so it should be in good hands I think, if the game ends up shit even with Yasuda then the problem is more than Platinum Games.