There are many things to do in the game other than gear progression. Like brawler's guild. They're about having fun, beating stuff, etc.
With that said, gear wise, there will always be a dead end. Sorry.
Progressing and "increase in power" rewards go together. Sure there are a few things here and there that could be better, but overall, everything is there and if you don't want to progress to the "next level", your progression ends there.
If you did all the LFR, got everything you wanted from there and has no interest in going for normals, then, it's over until 5.4. Nothing else on the game should provide you with something on par with normal+ stuff, unless it's on the same dificulty level.
Herioc dungeons can't be used for that anymore since ppl demanded that it should be only for farming, gearing for 1st tier or catch up mechanics for alts/new players. And since they're very serious about not letting a multi player game become a single player (and a single player content to be on the same level of dificulty of a normal raid, would be something really hard to account for the fact that you don't have other players making mistakes. Probably not everyone would be able to beat it), it's really over.