Fyi all: I just read about a fix to remove aliasing from the 6d (I didn't try it myself though yet): use Magic Lantern and shoot 720p raw at 5x zoom ... it's a tight crop, but it's supposed to solve the problem for good. Read more on the Magic Lantern forums: http://www.magiclantern.fm/forum/
Yes, you record 1:1 from the sensor, so no line-skipping and so no aliasing issues, but...
1- With such a high crop, you convert a wide angle lens into a tele. This could be good to reduce your equipment, but it also means that you can forget about wide angle shots.
2- You see 5x, but you record 3x, so framing correctly is very tricky.
3- Definition it's obviously lower, it's like watching at a 100% crop of an image.
So, I wouldn't call it a "fix".