at the idea this would be beneficial to anyone but WWE for the long run.
Whatever benefits NJPW would get for the short term would be erased once NXT Japan pops up because Triple H hasn't been shy at all about what his real goals are for NXT's global expansion.
Last time WWE wanted to partner with someone in Japan, it almost led to two promotions being bought out and shut down. Only reason their first attempt at NXT Japan failed was Wdue to WE being too upfront about what the future of anyone who partners with them in Japan would be.