I really don't care about charms and bonus roll and different loot distribution. The problems of LFR are elsewhere.
LFR was made for scrubs to see content, now they want loot too. That's the main problem.
LFR requires good players to clear it, atleast couting Spine and Madness or even all 2nd part of DS. The good raiders won't come back there once they started normal/heroic and got their gear unless they go on Alts, but still they wasted time if they didn't get any loot and scrubs that rolled Need on every item, that basically got carried took the loot. That's the 2nd problem I see.
Now the 3rd problem I have with LFR is what caused the famous bans. They made LFR super easy, put worthwhile gear in there, they made it so you can complete it as many times as you want per week like heroic dungeons but locked you out for only one chance of roll per boss per week.
Why not make LFR loot be available over and over like the heroic dungeon loot ?
If the loot sux compared to normal/HC, if the raid is made to be easy, if they want to give raiding loot to casuals, why not make LFR lock-out different ?!
My only conspiracy theory answer is that they want the good players to carry the bads thru LFR raids so only motivation is to keep the loot worthwhile but not let them get the gear they want.