Honestly, not really a good idea. She is a singer, so she needs to write songs that will be viral and bring promo but not to make dance moves like that... How catchy was po-po-po-poker face, and Rah Rah Rah Ah Ah, these are true music that she is doing, but not some stupid dance moves like PSY>..
it will be popular, but possibly annoying to others. for example, gangnam style is REALLY annoying, but it is popular. I think gaga should do something better. :)