If I was going to have a grudge, it would be because of something it them taking 4 tries to Canon's lens repair service to fix the IS in a 70-300 IS USM (non-L).
"Yeah we fixed it", "No you haven't, try again." "Fixed it this time.", "Put on a camera and it didn't work, try again." la la la
No, the point of me saying this is because lots of people are arguing that "Canon cameras sell well, so obviously 18MP is enough" or "... so obviously the DR isn't important." In a sense they're right, but it appears that it isn't the IQ that is selling the camera - it is the bells and whistles. When the reason for choosing a 650D over something else is the touch screen, then as long as the camera has enough pixels for facebook and WiFi to upload, well who cares about PASM, etc?
Ok, so you had poor service. I'm sorry that happenned, but that's not exclusive to Canon.
Personally, I welcome improvements to IQ and DR, as I'm sure many here do. The bells and whistles don't interest me either, but I accept that in todays social networking culture they will interest many, and Canon is going where it thinks the money is. That's business.