Make it so it's a solo raid. You go in with 24 AI controlled characters. Based off how you deal with the mechanics they react to you. You stand in fire the healers suck, everyone starts dying, you wipe. The reason for LFR was to allow more casual players to see content. This allows them to see it, and learn the fights.
Then at the end you get no loot. You're given some food and some flasks. You can bring them into a real raid. This will fix casual players on the forums whining about loot, there won't be any. Will also fix the hardcores whining that they're "forced" to run the short bus raid. --- Tanks. Insta Q's = Insta QQ's