KENTA is over with a dozen of school fangirls, and that's it. Of course, this is an obvious exaggeration, but you got my point. Unless NOAH's touring plans are high school gyms and kindergardens, this is bad idea.
I doubt one loss like that would totally ruin the guy. I know NOAH isn't exactly the hottest company right now, yet Morishima losing to an over and established worker like KENTA would exactly be the worst thing to happen. If anything I see Morishima being GHC Champ multiple times following this second championship run.
Well, you'd be surprised, because Japs aren't buying into "Juniors over Hewikis" stuff. Shima's already lost a ton of his drawing abilities since his Wild II and post-ROH days, imagine what happens if a midget called KENTA defeats him for the big one. Sheeeit, even Jun Akiyama lost some of his mojo after Ogawa embarrassed him.
There's a reason why Liger or Kanemoto never went out there (major titles), it's just too risky. "Being over" is a very tricky thing. NOAH is playing with fire, IMO, it could be Marufuji 2006 case all over again, but NOAH was hot back then at least.
Maybe KENTA won't be taking the title from Morishima, but from Kojima.
Honestly, this is by far the best option possible, if they really want KENTA as the Champ.