Wanting info isnt the same as using info.
Now that we do have information flowing freely, I assume too that nearly all guilds use this information, because, if they dont, they will be set back in the competition compared to those who use the information.
Still, it doesnt mean they wouldnt have preferred the information not to be there at all.
For the people saying they dont want to get watered dow bosses when they get to the content 6 months later, while I understand why you dont want it so, thats surely how it is already and has always been. Dont expect it to change.
Those who want the unnerfed content, probably just have to speed up. and the nerfing of old content is a way for them to do so. Its not exactly like content is right away, most people who are serious about raiding will have time to experience the non-nerfed content (excluding the unkillable versions of some TBC bosses, they are hardly relevant).
I simply dont believe different raid modes (easy, heroic, etc) will be feasible. It would take way too much work from Blizz.
And even if possible, splitting up the raider base even more might be quite a terrible idea, both for the competition, but also for guilds breaking up when they cant agree which ones they want to raid
Having SSCEasy guild lf members, SSCnormal guild looking for members etc, could end up being rather fucked tbh.
For the majority of the WoW playerbase I would argue the current "nerf the old raid instances each patch" is the best solution. Sure the how's and when's of these nerfs can improve, but the strategy itself seems fine.
The main issue really is, how to improve stuff for the people in the the other end of th spectrum: The best raiders. Right now, sure they are rewarded with the joy of killing a boss before others, but there could certainly be more rewards to make the competition more interesting. And not just for the first kill competition, but adding unto it, and thus fixing on of the main-issues for bleeding egde raiding: Running out of content.
Rewards for fast kills and all the stuff mentioned already, is really a way to accomplish this, whereas making different modes of raid instances isnt really benefiting either ends of the spectrum.