Maybe Blizzard doesn't have this concern because maybe it's enough for them players only buy the expansion and wait for all LFR wings to open.
But i would like to talk about it because i have seen this other thread called
"Casuals who say that WoW is too easy"
Why should a Blizzard game designer expect new players to raid beyond LFR?
Put yourself in the shoes of a new player.
You just came in to the game you leveled up, you are max level. You clear all LFR wings and beat the last boss of the most recent patch.
Now...it's time to stop and look around you. Calmly...
Lets pretend we are a commentator of "BBC Wildlife"
The newbie is feeling a variety of emotions. Should i raid beyond LFR?
-There is this thing called "item level" but why do i need it? To be stronger? For what?
Item level is only useful for
world pvp which is neglected in this game. You dont even need item level for BG's and Arenas because of the templates.
-Is there some kind of "unique ego boost reward" in raiding? No, not really.
-The newbie is left with the idea that he should only do it...
for the challenge.
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So with this i just wanted to say that
YOU SHOULDN't expect new players to raid beyond LFR.
Because the game is not designed to stroke the ego of said players.
Right now the game is designed to "do whatever you like".