Okay, I saw this idea the official forums a week or so again, and was really interested in it.
Everyone knows that Blizzard releases a raid, makes normal mode semi-difficult, then nerfs the raid by 10-20% at the next tier, so casuals and less experienced guilds can pug/run them. But how about, instead of doing this nerf, Blizzard releases a fourth raid difficulty alongside there raids, an easy mode.
Easy mode will essentially be the instance after its nerfed 20%, but released alongside normal and heroic. This ensures two things:
1) Raids don't have to be nerfed
2) Pugs can happen as the raid is relevant.
The gear could be in between LFR and Normal gear. The difficulty will be above LFR and below Normal (Obv). It is pretty much normal mode, but you can do it with worse gear/slightly less coordination.
I can't see what problem people would have with this, as it takes almost no time to implement. TBH, I miss the days of Wrath pugging the first half of Uld and ICC. Same thing doesn't happen now a days with ToT, or even MSV. Pugs are there, but they are rarer. There needs to be a middle ground for people who legitimately don't have enough time to follow a raid schedule, but wan't more to raiding than the botfest that is LFR.