Maybe the same team is up for bringing Ninja Gaiden back to critical acclaim some time, now that they've shown they're capable with Nioh? I really think this is just a case of KT treating DoA like a cashcow while putting their best efforts towards Nioh.
I remember seeing some hate for Hayashi when he was leading the DoA/NG teams but I always liked what he was doing, actually. It wasnt perfect but I was satisfied (more than compared to now at least).
Hayashi has no passion for DOA, neither does Itagaki. Shimbori does but he's being slowly assassinated by the company. And Nakamura will destroy the IP.
^ Sadly yes. Although Shimbori's direction wasn't the greatest, but it's looking like the lesser of the evils compared to whatever "direction" DOA6 has right now.