My first question would be "Where do I sign?". I'd love to be the stupid one in the room. It ensures that the group is doing better than what I could achieve personally. That's the role of a leader!
Obama wasn't the smartest cat in Congress but he's a great leader who knows to surround himself with smart folks. That's exactly what makes him a great leader. As a CTO, this would leave me to indulge in hiring, dreaming about the vision of the product and technology over the coming months, plan for our tech requirements (based on business needs), ensure the tech team is operating under budget etc. While pure coding is liberating, it's also very liberating to not be thinking of code while you focus on other things that make your team successful.
Oh, did I mention, I'd finally have time to finish the ML course on Coursera? That'll be awesome. :D