Thanks, TiAm I'll check those out and find a good middle ground. I looked at this mesmotronic full screen Cordova plugin, but didn't know how, or even if it would work. It's such a bummer the letterbox scale thing is not happening on canvas+. If it had that, along with its already great performance and apk size, I'd be in heaven. I'm no coder, so I'm sure if it was easy, they'd have it...
So, basically a game with finite wall needs like mine is gonna need some floating tricks. Thanks again!