I didn't find this hard at all. For this poll, i took in "beautiful" with the context of "womanly" in mind. So my judgement leaned towards which members are suited for such.
Katayama Haruka
Matsubara Natsumi
Kitahara Rie
Sato Sumire
Kashiwagi Yuki
・Haachan for that slow & sexy-like visual
・Matsubara for that spunky/hot image
・Kitahara Rie because she's a good example of 'bijin' (whatever that really means)
・Suu for a good balance of cute and beautiful (mandatory youngling in the list)
・Yukirin for that homely/simple girl appeal.
and because oshimenBorderliners for me would be:
Maeda Atsuko
Komori Mika
Nakagawa Haruka
Takahashi Minami
Kojima Haruna
・Acchan didn't make the cut mainly because she's more leaning on the cutesy side (in my opinion).
・Komori, partly for her inexperience on utilizing her 'abilities' (read: makes weird, unsettling stares and faces on camera)
・Harugon because she's also crazy lookin at times
・Takamina because she's short.
・Haruna, well, she just doesn't make it, if it were a 6 member list, she'd definitely take the spot.
The rest of whom that aren't in my lists, just have one or two glaring "unique" things about them which
ruins it.
ro・∀・nin