There is nothing wrong with having stripperific outfits in game. Many people like them. Just don’t make them the default option. I logged into the GW2 beta, and of all the female norn default appearances, only the engineer has invented the “covered midriff.” We justified half-naked norn by their tendency to turn into bears, so they can’t be encased in metal … except that the men are. The human women seem to be a good mix, mostly with reasonable outfits, although we have the Asian lass in the orange bikini with some sort of metal exoskeleton floating around her. Except for the mesmer, the rest are great, classically stylish. (The charr look silly, clothed, but silly. The furred race uses more cloth than the giants?)
If people really like the stripper outfits that much, put them in the cash shop. This benefits your bottom line and your first impressions. League of Legends had people lined up to demand the chance to pay for a bunnygirl outfit for Riven. I have no idea how much money Riot made off that, but it seems like a wise business decision. Give people pants for free. Make them pay to take them off.