Would you as a player be okay with this if blizzard were to make the thunder king raid only for Normal and Heroic difficulty? How would it affect their playerbase if they choose to only allow it to be accessed via Normal / Heroic mode, seeing as how LFR is beginning to be an imbedded part of WoW these days..?
It would probably be still good for the LFR people because they could form 25 man raids and farm the trash for the epic trash upgrades like they did in Sunwell, (at least thats what many of the less skilled guilds on our server did during TBC)