See many issues with this:
Issue 1: Catering to a small percentage of whiners
Let's be honest here, Bliz is only making this change because certain "raiders" were whining because they were being "forced" to run LFR. First off, no one was forcing you to do anything. You were the one that convinced yourselves that you absolutely NEEDED the gear. If you had been raiding since the very first raid patch, you didn't have to set foot into LFR.
Bliz does not balance the first wing of bosses with the assumption that everyone has LFR gear on and has those set bonuses/trinkets. Therefore your "I needed the set bonus/trinket" arguments are nil.
Here's an idea- maybe you and your raid group needs to adjust your strategy. What's stopping you from doing something that isn't in the guide you guys just read? What works for one group doesn't mean it's going to work for your group.
Hell, what's stopping you from farming normal mode until you guys are utterly bored because it's too easy (hint: that's a sign you are ready for heroic mode). Know what? You guys managed to screw every progression raiding guild out there.
Why? Because-unlike the old days where you did have to farm normal mode or the last raid- you could step into LFR to complete your set bonus on your own time if you wanted to.
Oh guess what? This change doesn't fix anything for you: you are still going to have to go back to the two other modes (as opposed to one) just to try and finish those set bonuses and get those trinkets.
It's called raiding: you do what you need to do to improve your groups chances of success (especially if the new strat doesn't work). If you can't handle doing that: you shouldn't be raiding.
So how long until you go to the forums whining because you have to do even more work? Hmmm...maybe you guys should have shut up and thought about it before you started whining in the first place.
Issue 2:Catering to another small percentage of whiners
For almost three years, Bliz has been bombarded with the whiny raiders who "no longer feel special because LFR raiders get shiny things" posts.
I have this to say: get over yourself. You aren't special just because you raid. People were not drooling over your gear. Just because one guy might have done it in the past, that doesn't mean everyone was doing it.
In case you dimwits forget: you are the ones that get the highest level gear. You are the ones that get the shiny mounts and titles. You also get a Feat of Strength for beating up the latest bad guy before the next patch. Hell, you even get heirlooms and pets. If you're a shaman, you get a special rare set in SoO.
But, no, that's not good enough apparently. Nothing will ever be good enough because an LFR player still gets a Kmart brand of raid gear. What's next on the agenda? Going back to bashing normal mode/non-mythic raiders because they get gear that's a different color then your own?
What I don't get is why Bliz would listen to these whiners in the first place.
What LFR SHOULD have done:
LFR should have opened up raiding to more people in the community. With it giving semi decent gear (with bonuses) and a chance to at least get an idea of the boss fights, it should have brought more people into the raiding community.
Now, I'm sure for some guilds- it did.