Totally. I always give a bit of slack for stage outfits, but their red carpet style and candid style as a group has no personality. Look back through history and it was the same for a lot of bands, I even remember Sugababes wearing shoes with colour-coded soles to match the belts they were wearing (one green, one yellow, one blue I think) which although a nice touch was pretty contrived.
I think like you say they'll grow into their individual styles once the record label gets bored of controlling every aspect of their lives!