Too bad sexy concepts doesn't do it for me anymore. I didn't like SISTAR's Shake It.. worse than Touch My Body. I like the relaxed concepts (APINK's Remember) or even the innocent GFRIEND's (Me Gustas Tu). GFRIEND's live isn't the greatest, but at least the CD version is listenable. Or even just normal pop music like Red Velvet's Ice Cream Cake or The Ark's Light. In short, sexy concepts are outdated. Too many groups pumping out these concepts make them go stale.
It depends on the groups concept and age... I like the fact that there are options. For some groups, just wearing less can put their name out there. Plus, a lot of fan boys love it.