1) You'll be the only one with a wireless charging laptop, so you'll be the only one using your expensive charger, so you might as well...use a bloody wired one!
2) This will take longer to charge the same battery and will result in stupid amounts of energy loss - very environmentally friendly, I'm sure.
3) If the idea of this is that you can pick it up and move around, what's to stop you moving in and out of range, constantly ragging your battery until it dies?
4) For all this and more, it'll cost a small fortune.
To hell with that shit. I want my laptop to charge in an hour, not trickle charge for 6 hours.