I'm rather a fan of fanservice... but yeah. There's a line where you cross and it's no longer just in good fun anymore and it starts to come off as seriously creepy. It's kind of like that point where something goes from being sensitive about an issue to being preachy, only in the opposite direction. It's like the story suddenly becomes an thinly veiled excuse to put in a panty shot or a jiggly boob, because the creator is a mouth-breather and assumes I am, too.