I saw that new Roku stick that doesn't require MHL port is coming in April. It was described as Roku 1 in a stick form and similar to Chromecast, it only requires an available HDMI port and USB for power. Unlike Chromecast, it comes with a remote control!
http://techcrunch.com/2014/03/04/roku-49-dollar-streaming-stick/
http://techcrunch.com/2014/03/04/roku-49-dollar-streaming-stick/