It is my belief that raid finder is the worst thing ever implemented in history of the game. It completely takes away the feeling of seeing a boss for the first time in a raid and if you're a hardcore player it is currently necessary to do it for at least the first couple weeks of the expansion.
To fix this, I propose this: Make the quality of items dropped from the first raid of the expansion rare quality.
We all know that raid finder is brainless and literally anyone can do it. It is welfare loot and it has completely taken away the feeling of getting epics in this game. Instead of forcing people to run it for the first raid, just make it drop blues so we can instead do dungeons if we don't want to ruin the raiding experience for ourselves. It allows the people who aren't going to raid the chance to experience the lore and a dumbed down version of the raid itself.
I think that doing this is a good compromise. It will restore the epicness of loot from raiding and it will deincentivize something that is literally just dumbing down the experience for everyone who raids above it. After the first raid it's not as big of a deal since mythic raiders' gear will outscale the LFR loot.