They really don't.
I wish she would do another Exodus type of album (whether Japanese or English) where she really just experiments and does whatever the heck she feels like doing. I mean, I felt This Is The One played it safe material-wise but it still had some different sounds that sounded so Utada, though just on a more scaled platform. But I'd really like that type of album that makes all of us go "Wait. What?" Cause I remember the first time listening to Kremlin Dusk and having to listen to it over and over and over and over and over and I still listen to it to this day, that song is my jam. You Make Me Want To Be A Man get's stuck in my head too. xD Lordy, I'd kill for her to experiment like that again. I feel like Utada experiments, though a bit off the radar, are always fresh. It's not just an experiment for her as artist, like a pop-star trying a rock song, or a country singer yodeling, it's an all-around experiment for everyone--something so different and new--and it's awesome.
(Though I'm still trying to figure out what she meant by "Like Captain Picard, I'm chillin' and flossin'" Like... what made her write
that? xD)