I'm a little apprehensive, but maybe that's just because this is a somewhat different approach than what the normal games aim for. Not that it was surprising, a Project Diva style iM@S would be the best way to hook fans that got to know the series via anim@s.
Still, with all this pre-rendered stuff going on, maybe I'll just stick with S4U for the time being. Customizing the idols is such a huge part of the games that I've become addicted to (except the pacifier, just....weird :/)