And as for those that "Easy" would be targeted for - I know a lot of these players, they are the B team in my guild that can't kill Horridon. Have some other friends in a similar situation. They aren't looking for a high level challenge. They are looking for content that they can do with their friends/family. Normal is too hard for them, and honestly LFR wouldn't be terrible, except that they have to deal with the other people in LFR, who routinely ruin the experience.
Going back to the previous tier could be a solution, but that gets boring fast. The B team in my guild was stuck on Garalon in 5.1, and then cleared all of Tier 14 the first week of 5.2 when it got nerfed. So they can do Tier 14 with their eyes closed, but can't even come close to making a good attempt on Horridon. There needs to be something between "brain dead easy" and "untouchable" for groups at that kind of skill level.
The people I'm talking about are fully aware that they are bad at the game, and don't care that they're bad. They just want to play it, and play it with people they know, and right now the game doesn't facilitate that. It would help stop the bleeding subs from casual/bad players, and it SHOULD have no effect on normal/heroic players unless they're just assholes who think the content everyone pays for should only be for them.
Being a heroic raider myself, I don't give a shit what lesser skilled guilds are doing, it doesn't affect me.