To nopunin10did:

I understand your desire to want to be able to see all the content that the game has to offer, and support it. But I do think that the current model is killing the endgame for just about everyone. Even though I no longer play, I have friends in highly-ranked progression guilds and more casual normal-mode guilds, and they're all having trouble with attendance, drop-outs and recruiting. Every week that goes by with failed raids or missing players just makes it that much harder for the guild to keep going. It's NOT just a matter of hardcore vs. casual, but a problem of everyone feeling like something isn't right for the play style they prefer.

I don't have an answer - maybe there needs to be only one difficulty mode but with a progressive buff as in ICC. If so they really need to get away from the "raid seasons" model of current/old content and make tiers available/relevant for longer periods of time so that more casual players can get enough of a helping hand to see the content. Maybe they need to separate normal and heroic modes more distinctly (i.e. have heroic mode fully designed as such, and not just a scaled up normal mode). And who knows what they will do about raid size. But if they don't do something, there will be more collateral damage to the game's ecosystem from departing players and dissolved guilds, and once that spiral starts, it's hard to ever stop it.