Theres not many things that have hips. And most are related to shadows....
The point of it is that while its not 'dancing around and RPing its hips' It would be!, if it could be scripted with AI. Don't look at it 'standing in the same place'... sure, mechanically that is what happens, but if it were capable of such with scripting it'd be dancing in and out of shadows, striking from all sides, etc... Such attacks would be very hard to 'defend' against, unless you had good senses to hear/see its new attacks coming, plenty or reason for it to 'ignore' or shutoff your defense modes. And if you had those good senses, well, that's managed too, since the hips won't work on you!
Whilst annoying as all can be, I think the behavior is fine and fitting for such creatures of the shadows and night.