Unless Apple want to get away from their top spot as a tech company that thinks about the environment, which they really like to brag about, and also dish the aluminum chassis that they just created for the rMB, then they won't do wireless charging.skylake is most likely the reason that apple made the bold move of having only 1 USB port. wireless charging and wireless peripherals (WiGig - wireless replacement for USB, HDMI...) would be perfect for the macbook and supposedly coming with skylake.
As with the above poster, I can also assure you that Apple won't go the way of wireless charging in the foreseeable future.
I seem to recall someone quoting the rMB screen as taking ~30% of the power of the rMB, which I can surely believe, I am not surprised that you get more battery time that most people. I also prefer a low light screen, which seem to opposite of what most other people prefer.1 bar out of 16. My eyes will incinerate if I go any higher than 12 bars.