and challenge modes are hardly a flop. they simply dont cater to those who dont wish to push their class ability (and seriously, you NEED actually gameplay skills and tricks to get past them on time).
Its like saying that space travel is a flop because such a small percentage of humanity have gone into space.
Doing 5 mans is not a minority. Its an aspect of the game that many perform. "what you dont like or do" =/= minority.
However i dont believe Each And Every raid patch requires a bunch of 5 mans to go with. I'am alright with the Thunder King raid not having 5 mans to go with. Its a non-issue to me.
And i dont care how many 5 mans the other expansions had. The "rehash doenst count" arguement is ridiculous, its been ridiculous since it was brought up the first time it was done. The remade 5mans are continuing the story of those areas in relation to changes to the world and our previous attacks. I enjoy seeing the results we caused after attacking the dungeon plotwise as well as changes incured by the events of tbc, wotlk, cata. Plus we werent given the same dungeon, we were given entirely new mechanics and mobs to deal with. The scholomance 5man is amongst my favourites, i really liked the deathknight lady and the gradually-more-insane scarlet crusader quest line.