Are there any plans to allow MacBook Pro to operate in clamshell mode without having the power adapter attached?

I have had my MacBook Pro for a few days now, and I love it. Easily one of the best engineered pieces of hardware I have ever used. However, one feature that annoys me is that the computer cannot have the lid closed while attached to a tv or monitor without going to sleep unless the power cord is attached.

When I first contacted Apple Care about some questions about this Mac, as I had never used one before, they emphasized how important it was to maintain good battery health, and not over charge the computer or leave it plugged into a wall all day long. I want to avoid doing this, but at the moment I cannot find a way to operate the Mac without having it plugged in to the wall so that I can use it comfortably with my television.

Any suggestions or ideas are welcome.

Thanks!