Honestly, this is never going to work. I guarantee that within 3 weeks, Blizzard will be forced to gut LFR. The only people clearing this will be regular raiders. Blizzard is seriously overestimating PUGs ability to communicate and coordinate. Honestly, this feels a lot like going from Wotlk heroics to cata heroics. It isn´t so much that these LFR´s are difficult, it is that they are significantly more difficult than DS was.
Unless you get lucky and get put with a 10man raid that queues with 2tanks and 3 healers and 5 dps... i don´t see very many solo players having much fun in these.
The really need to gut any mechanism where a single dpser can wipe the raid. Having a dot and not moving away from the raid, and wiping it? haha..