Honestly, LFR right now as -far- as the community goes is toxic, if not the most toxic environment in WoW. You can AFK and get loot, you are stuck with toxic, idiotic, know-it-all morons and other negative people. What is good about it? How it kickstarts newbs and alts into raiding and has unique transmog you can get and makes it a bit easier for a raid schedule. As far as the negatives go or the entire structure of LFR, how would you change it for the better?
I'd redesign the overly-abused kick feature for sure. Median iLvL of the group determines boss difficulty and gear drops. [You get paired with the almost the same people of your iLvl but since it is LFR there would be a "max" so it doesn't become too hard.]. Remove deserter debuff because no one wants to wait 30m to get a chance to be stuck with another shitty group again. I'd remove gold from bonus roll that way you're guaranteed to get gear whether it's an upgraded duplicate or an item you don't have because fuck stupid ass RNG.