Upload & Sell: On
In dark shooting condition, the AF point is visible as LED light, right? You touch on the AF/shutter button and the light is on. It is lit with each movement of the AF point as you select that with the "joystick" or any other method available. And it will be lit on again to confirm AF in a single shot mode. OK, the red LED is not readily visible to confirm the AF status during the day under very bright conditions, that's true but in AI Servo, it will not be lit anyway. Maybe because I rely a lot, well, most of the time on the AI Servo mode that doesn't facilitate any confirming light to be lit and as such, that doesn't bother me at all. Relying on AI Servo using any AF point is something that I would not be able to do using the 5D Mark II, that's a 1D series caliber AF. But I understand your point and your shooting style is different than mine.
I agree, your 3rd point is for my taste the most bothersome. I have not seen anything like that with my camera. Not even a single time and knock, knock, knock. It has been very responsive and zippy. By the way it sounds, that is again, more an isolated case. Of course, that notion will be shot down if both your cameras do the same. Does it happen with both? If not, I would return the camera that hangs up, AF-wise. For all we know, the same camera is the one that gives you CF writing issue as described in your 4th point.