Where did like-minded justices stand on Heller? How much credence do they give stare decisis? You really think Obama justices would stay with the majority on Heller? Just because of historical "precedent"? You do realise the irony of this right?
In fact, justices like Ginsburg, Breyer, etc. have blatantly criticised stare decisis when it disagrees with their progressive agenda, and employ stare decisis when it agrees.
The judicial branch is blatantly as politicised as the other two. There is absolutely no reason to believe Heller will stand when the court turns liberal.