Personally, I think Moi Dix Mois lost a bit of its touch after the whole band roster was changed. Whatsis name, Juka, had a far better singing voice than Seth. but he decided to leave, what can you do there.
Actually, I find the whole Juka Seth thing pretty funny.
Juka Left M10M to work with Hizaki with both Hizaki's band (before Versailles) and on his solo Project, eventually he has his own band now named VII-Sense
Seth, Still with M10M also Vocals for Art Cube.
It makes full circle now that Art Cube and VII-Sense made a Collab mini- album call Art Sensation featuring a song from each Band.
Personally, Kozi From MM carried over the feel from MM in his solo project.