Sorry, I have to wholeheartedly disagree with you in two places: First of all, they had to give Paladins and Shamans to the other faction. Before, they were essentially making two separate PvE games, just because even the differences in abilities between two different classes made it very unbalanced. Do you remember how the Alliance had a cakewalk through the extremely threat-sensitive BWL just because of Blessing of Salvation? Or how Horde had easymode against Viscidus in AQ40 because of Poison Cleanse Totem? But other than that, how Paladins were ridiculous in any fight that involved any debuff of any kind besides curses, thanks to Cleanse?
Blizzard had two options, or else they were going to be dealing with a game that was inherently imbalanced against half of its population: Make Paladins and Shamans effectively the same class, taking out any flavor; or... give them to both factions.
I will also disagree that the game is "easier." I think if you look at it on a mechanics basis, the fights are more complex in end-game raiding than they've ever been. Any of the bosses in ICC (maybe not Marrowgar) could have been a final boss in any of the Classic WoW raids pre-AQ40.
They seem easier for a few reasons. First, players have so many more tools available to them than ever before, both in-game and out-of-game. Remember when we had to all wait for five Sunder Armors before DPSing? Now, just Misdirect to the tank, hunters. We have Wild Growth, Chain Heal, Prayer of Mending; all of which are extremely useful for keeping people alive. We have 20 more talent points than we did at level 60. Player characters are more powerful.
Plus, we know more about the game, and we have more resources. We know that every tank needs to have (X) defense to be Crit capped - a lot of people didn't know that in Classic. We have KTM and Omen threat meters (would have been really nice in BWL!), we have Deadly Boss Mods, we have forums like Elitist Jerks where theorycrafters can work out the maximum potential dps spec (I remember just changing specs because I felt like it as a mage). More to the point, we've seen these tricks before. "Oh, this is a Living Bomb fight, run away from everyone else guys, don't stand in the fire."
The hardest part of raiding pre-BC was getting 40 people, let alone 40 people who were halfway competent. I like everyone being able to see the content.