I'd love to see native Chromecast support in the application. I'm using the Google Chrome experimental full screen cast to do my workout on the big LCD TV, but the cast is lagging, and there is a drop in both audio and video quality. HDMI cable is not a good option for me.
Not really familiar with Chromecast, but can you steam anything from your PC to your TV with it (video game, movies, etc.)?
I read that lag can be due to the bandwidth limit from your router.