I feel like Captain Obvious when making this thread, but the game right now? It's shit. Not just normal shit, but pure shite.
LFR? There's no fun in LFR. You run through it once to see the content... and next week you cancel your subscription again until the next raidpatch. In fact I didn't even bother doing LFR either for the last patch, since I already know it's just going to be a huge timedrain of mashing my DPS buttons on an easy boss that takes too long to drop dead.
Timeless Isle, Proving Grounds, Brawler's Guild? Irrelevant content. I might be a casual, but that doesn't mean that I want to do challenging content that doesn't reward anything. I still like to feel my character growing stronger and earning rewards for the challenges that are offered to me.
If Blizzard doesn't manage to add an endgame to the next expansion which offers the same excitement and rewards as normal or heroic raiding, but for casual players, who just want to play when they feel like it, then this will be the expansion that will cause the entire ship to sink.
One of the things I'd also like to point at is the fact that I used the words: "Casual exciting" in the title instead of "casual friendly".
I think the difference is very important, because yes, people are right MoP is the most casual friendly ever, but is it casual exciting? Nope. And that is where the problem lies.