Shiina just needs to do that Togatta Teguchi album. That should be her next step. Or a really traditional Japanese album. Or an avant garde Morning Musume style album.
Sanmon Gossip shows in the least that Shiina's still quite eccentric. Like that last part of ii Karada (Forget the whole big band jazz).
She needs to just fucking let her ego go absolutely mad again. That ain't gonna happen with TJ, though