lore is what makes it interesting........ Its creates a living breathing world. Lore is the story therefore. Messing it up is going to matter to those that acutally follow the lore.
Of course your going to get a lot of people that dont give a crap about that and only care about more purplix's on their char.
Yes they came up with the lore but they should at least try and maintain it to an extent. Star trek has a very strick lore and timeline they must follow (did you know every book based on star trek has to be approved to make sure there is no mistakes in timelines and events that can happen - Published books that is) Why not try and keep a strict kind of sense to the Warcraft lore ?
I found the warcraft lore very interesting. Some of the books are really good to. But at the moment it just seems to be going downhill.
There a two kinds of players to warcraft. Those that read the quest text and those that don't. I feel the latter vastly over populates those in the former.
TBH, i bet most of the people saying 'the lore is messed up' really dont know that much about the lore in the first place.
Most of the disagreements on the lore and about people quitting are based on opinion and 'feelings'.
To me, I kinda like these supposed changed to the story of WoW. And most of the class-race additions kinda make sense to me.
Well all except for Troll Druids.
But all this info has to be taken with a massive heap of salt, since Blizzard hasnt said anything about it yet.
However, out of the changes listed:-
Class-race additions - Some make sense (Dwarf Shammies, Holy Cows, Warrior Belfs). Others just seem strange and unlikely (Troll Druids, Gnome Priests)
Azeroth change - Could be good fun. Nice to see familiar place changed forever

Would like to see Wailing Caverns get an 80+ makeover and maybe Black Rock Mountain to erupt and new instances in there (I would love to see BRD removed)
Revamped Dungeons - Well it depends on their (Blizz's) definition of revamped. They could mean mobs are tuned for 80+. Or it could mean a total rewrite of the instance. More bosses, different encounters and maybe different layout.
Unrealeased Dungeons - Comeone, people have been hoping that Hyjal, Uldum and Grim Batol get opened since TBC came out.
New bosses (Queen A and Deathwing) - About time we saw Deathwing. And if this expansion has anything to do with the Maelstrom, then Queen A will be a boss.
New Races - Not sure, dont really want to bet on them. They do in a way fit WoW, but is gonna need some questline to get the Worgen on the Alliance side. If the humans dont like the Undead, how to they feel about furrys? Goblins on Hordeside I can see happening. Alliance factions dont like them (look at the goblin thats chained up in Howling Fjord, forced to let the alliance use his Zep), so maybe the young King tries to get rid of them and the horde offer protection for the goblins.
Flying in Azeroth - Well, back in early TBC, I had a bug. I could fly into instances and stay mounted. Great fun flying about in Mechannar. But I could also mount up and fly into the dark portal and stay flying in Blasted Lands. It then showed up the restrictions of the map. I kept hitting invisible walls, couldnt go that high and got dismounted quite often. I never got to the border of the Swamp of Sorrows :/ To me, to allow flying in Azeroth would require a lot of work. There is quite a few gaps in the maps of Azeroth. Ie, South of Un'goro, South of Silithus and the problem that the Belf areas are on a different server to EPL. Lots of work to do there.
The Guardian of Tirisfal - Thrall next guardian? Thats a bit of a stretch. Also, Malfurion is a druid. And to appoint a guardian, it used to be upto the council of Dalaran. Although the last one, Mediv was the son of Aggwen. And Im crap at spelling too.
The (New) New Horde? - Well in another way, this could happen. Garosh is the son of Thralls best buddy. And Thrall doesnt have a son. In the game, Thrall treats Garrosh like he was his son. In a way, this could blind him to Garrosh's thirst for war with the Humans. If Thrall left Garrosh in charge, I bet Garrosh would try to start another War. Thrall wouldnt normally oppose this, but not being there, there would be little opposition. Except for Carne Bloodhoof. In WC3, Carne help Thrall, so much that Thrall helped Carne to secure a homeland for the Tauren (Mulgore). Add to that Carne is quite peaceful, I bet he would oppose any kind of war. However, in Thunderbluff, there is a faction of Tauren that are opposed to Carne. The Grimtotems. I dare say that Garrosh could get the Grimtotems to 'bump' off Carne and allow them to rule the Taurens. This would probably split the Taurens into 2 factions. The ones following Garrosh into war and the ones who follow the son of Carne. Maybe further into the expansion, both sides will have to stop the war by either killing Garrosh or the Human King. This could lead the Tauren to come to desperate measures. Like meddeling in the light . . .
Anyways, these are just my thoughts about the information presented.
I suppose we will find out how much of this is true this weekend.