Canon used to be known as a "Revolutionary" company before they became the dominant company. These days, they are known as the MOST conservative of all the camera companies, which results in really long waits between significant product updates, a lack of desire to fix major camera flaws and not listening to customer's concerns.
As for fixing the moire, it is something that is not even an issue in DSLRs that are cheaper than Canon, and these cameras (Panny GH2) have ZERO over-heating issues. So it's a fix that is here and now and obviously very do-able.
Since you are probably a still photographer, just imagine when you take a still, if you could NOT take a deep focus picture of anything with a pattern (striped shirts, phone lines, roofs, fences) without a rainbow pattern going through it and also have edges that appeared very pixelated (aliasing issues). You would be very irate and want a fix also.
And yes, I would jump ship, but it's hard to do when you've invested 10K into Canon gear to just switch. Several years back, I bought the 7D kit thinking this was an apparent problem that would be just be fixed in the next iteration of the camera. Boy was I wrong.
Any yes, I would gladly pay 5 to 6K for a Canon HD large sensor video camera that addresses the problems, but dang.... they don't make one of those either.