This.
The LFR is far from a finished project, but they were probably forced and/or rushed to get as much of it done to release it for their "last content patch" of the expansion. The fact it only works for one raid is dissappointing. More time should of been spent on making it available for more than just the Dragon Soul raid, this would of been awesome. The loot rolling problem is something that should of been addressed during the PTR testing and FIXED because the frustations that it was going to cause was obvious, blizzard has been doing this for 7+ years, they should know doing things that piss off your customers isnt good for buisness or reputation.
Don't get me wrong I still like the raid finder as it is now, but if they would of imo done the job properly in the first place the raid finder could of been 10x more awesome. I've noticed a trend over the last few years. Blizzard constantly trying to push out products sooner and faster than ever, but their time alloted for completing such projects seems to be shrinking. Much different from the tried and true method of "when ever its done its done".