As far as the endgame of Warhammer (which I did mention) there are tons of dungeons some of which take 24 person wargroups to finish, there is alternate advancement of a sort since you have two levels. Your first level is rank, which is a traditional XP level.

The second level is renown which you get by contributing to your factions victory by doing everything from turning in quests which gives victory points so your faction can take over a region, to taking contested PVP points to getting kills in realm vs realm combat. That renown is capped at twice your level and gives you a large amount of talents you can trade renown points in for (one per renown level, there are up to 80 you can use on at least 70 talents).

Another big part of the end game besides epic battles (which start at lv 3 with huge groups fighting giant PQ bosses on par with the best 60-70 raid content I found in WoW and only gets better) is building to confrontations with the enemy king which takes place in huge groups. There are many epic guardians of the cities, many of them from Warhammer lore, and it culminates in having a real effect on the world.

If you Kill a king they lose their city, they have to sit on the outside in hovels and use a black market until they succeed in taking it back. The world is dynamic and what you do actually matters in terms of taking territory and forts as a group (forts are also held by raid encounters, some of which take 24 or more people to take over at higher tiers with epic loot).

As someone who killed Illidian it was honestly kind of a letdown. It was just another fight, killing him really had no major effect on anything (except a few pieces of slightly better loot dropping) and was closely followed by farming him 30 times, a big part of the grindfest that is WoW.

I bet you anything A) Arthas will not be killable for at least 2 years as they stretch out the expansion as long as humanly possible just like this last time and B) there will just be new factions to grind, new very similar boss encounters to do over and over and PvP that has no consequenses in the world outside the instanced battle grounds.

I mean wouldn't it be exciting to attack Ironforge or defend it and have that defense/attack actually matter? Wouldn't it be great to lay siege to the undercity and force the Undead out of their capital after a huge raid encounter with their banshee leader? Sure beats the hell out of another by the book, find the strat online then grind it forever set of raids.

That idea that the game should be boring until you hit the cap is exactly what is wrong with WoW. Warhammer is fun from lv 2 on with tons of stuff to do. Lets grind quests for 2 weeks of gameplay so that we can actually start having fun doesn't seem too appealing anymore after trying something different/better.

To show that I'm not just some troll lying about WoW who never played it look up Athena on Aggramar, thats my character (though I haven't played it since halfway through last arena season when I maxed on rep, so it might not show up, here's hoping!)

I really did play WoW a long time, which is why I'm so surprised how much better things can be without all the things that made WoW seem more like a job then a fun hobby. I think anyone who didn't feel like WoW was a job at least a few times when they were grinding faction to get keys to do heroics or get that one last CE epic item or those AV rewards is lying.

I have done a lot of the higher lv dungeons and other mid to late game stuff in beta, the only thing I have not really done is a king killing city seige.  It's difficult to get to that point since you need to hold forts across the high lv portion of the world and take over parts of the city before you get to it with the other faction fighting you tooth and nail.  The fort bosses and fort seiges were really great though, so I can only assume the king attacks will be even better.