i'm not sure if I get what you mean but i'll try ...
My Ideal Asian Pop Idol
Looks & Apperance : preferrably beautiful , natural looks. I don't mind that much is she a fashion icon or not , but being an icon usually leads to there being more articles and fotoshoots and stuff so it's a plus. looks aren't the main issue tho , but if i were to enjoy her PV's she should look good. PV's don't really matter that much tho.
Voice : preferrably good voice , not too much of vibrato and high singing . tho I think the singing voice can be compensated by songs a lot. as long as the songs are good and the voice is alright i'm happy . I don't care about her abilities to sing live , doesn't matter to me at all.
Music : I prefer either just rockish pop or "dancy" pop , and I love remixes. And my ideal pop idol sings faster songs too , not just ballads. and hopefully releases new stuff relatively often. I like japanese hiphop/r'n'b a lot too , but when i think of j-pop idol I think of pop singer. I don't really care if she composes or writes her own music.
as for her image , I find pop idols who try to be "cute" all the time really annoying. other than that I don't really care. I don't mind a sexy image either.
ok , that's all i can think of right now. You can probably guess some of my favorite j-artists from that description