You're getting trashed because you are claiming to be a judge as to the state of healer specs when its obvious you don't play most healers at all and only play monk and maybe 1-2 other specs. It's a big jump to even be good at your own class to the point of being an "expert" (and even most "experts" debate each other) to the degree that if you don't main or heavily main-alt the class you probably don't know shit. If you don't even play the class at this point honestly you have no business giving opinions. I have all 5 heal classes leveled and I'm still hardly qualified to give good opinions even on some of the alt ones that I do play.
If you are actually posting this in hopes Blizzard will read it (rofl) I will say straight out you aren't qualified for shit. Easily able to tell based on your post. After this post I will not be responding because this thread does not need bumping and I recommend others follow this example, I hate to say this but it is really looking like someone else pointed out as shameless self promotion.
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That said your examples of spread heal (shamans doing anything, paladins using light of dawn which is an HPS loss in today's healing) show a pretty low understanding of classes too.
Anyone who acts like he's qualified to give expert opinions on the state of all 5 specs is either 1) a world class raider who also has other world class raiders advising him on the specs he is less knowledgeable about, or 2) a sham.