Precisely - whatever route they follow for the duration of the xpac, 5mans will be launch-content focus only, at best. Then Blizz and ppl will move on to raids. Sure, they might throw in a few more higher ilvl dungs towards the end of the xpac, but they will still just act as -another- form of stepping-stone to accessing raid content. This will forever more be the focus, and given how modern Blizz want all players to see all end-game content in some form or another, nostalgic ppl must come to terms with the fact that the days of TBC are long-gone, never to return, e.g you're never again gonna have guilds farming 5man content as their personal form of end-game (or raids released towards the beginning of an xpac's lifespan).