i) It's not actually compulsory to machine gun and shoot 400 frames in an outing on digital - to be honest, a couple of times when I've been out shooting with the 7D and a couple of EOS-3's, I've probably exposed more frames on film than I have on the digital - mainly due to the fact that I've taken the same frame on B&W and colour film (and, if it's been on E6 colour, I've very probably bracketed the shot - film stock is cheap - missing the shot through Velvia 50's lattitude is mortifying and expensive to re-shoot!!)
(ii) Just because you take the time to get the technical aspects right, doesen't actually preclude also taking the time to get the composition just as you'd like, and, much more importantly, taking whatever time it takes to get the light correct... Admittedly, sometimes we're talking about a 10 second window of correct light - say at sunrise/sunset or as the sun comes from behind just the right cloud - but that's why you sometimes spend the might in a Bivi half-way up a mountain, just to be ready for it!.
(iii) I think my photography improved immeasurably when I actually understood the technical stuff well enough to be able to actually just let a small part of my brain take care of it, while I got on with thinking about the actual shot.
(iv) If you disagree with someone's critique on a shot - provide your own, explaining why
in your opinion the particular look either works for the shot, or at least doesn't intrude on the shot. The problem some people have with giving critique, is that they haven't necessarily been exposed to more "artistic" interpretations of shooting - not everyone has an Arts background - my education in matters artistic consisted of a 1 hour weekly lesson for 3 months, before my A-Level general studies - and actually comprised sitting in the Library looking at books of old-master still lifes.
Some of that stuck in my memory though...