Im@s with this game around is like highlander, THERE CAN ONLY BE ONE. (though we already know who the winner is, heh)
But in relative seriousnes, this is the semi H game that Im@s purposely avoided being, sure neither of the games has any straight hentai scenes (to my knowledge), but the aproach of DCC seems to imply of a more erotic feel but that costs it image wise a loss of character where an image can be everything when you are selling a product.
In regaurds to character design, Im@s isn't that innocent from taking older stock character concepts, it is what Namco did with them through story and gameplay that fleshed out the idol's we know and love today that keeps us coming back.