Oh god it sounds like the mechanics are gonna kill a lot of people.
Towards the end of cat I stopped doing the second half of DS because it just wasn't worth the headache(or repair bills) from people killing all the corruptions, aoeing the blistering tentacles no matter how many times you tell them what to do. Hell at the very end groups were actually wiping on the first half. Also I started running again after the changes to the loot system to see how it worked. I ran 4 chars for the last 2 weeks and didn't see a single drop that was useful for my spec, and 0 tier tokens.
Let's be real here, the mechanics were never the hard part of LFR. The hardest part of LFR was getting 2 tanks that knew what the hell was going on, at least 3 competent healers, and around half of the DPS that could do more DPS than the lowest tank... and people that can follow simple instructions. If you had all that it was a nice smooth run. Low hurdle? perhaps but surprising how many times you couldn't get that group together.
Mechanics where one idiot can wipe the raid, will undoubtedly kill LFR... because I have never seen a single LFR that didn't have at least 1 idiot.(and that is from 12 85s geared in LFR)
If the rewards are as bad as they were under the new loot system in Cat, and my fears about the quality of groups vs. mechanics in MoP hold to be true, I have a feeling I'm going to be skipping LFR on all my chars in MoP. Considering I'm done with heroic dungeons on my main, and justice is useless, it looks like this expack is wearing out fast.