Why still buggy?

It's strange, but I don't think Blizzard was able to fully get NPCs to attack each other correctly before TBC, and they don't seem to have bothered fixing it.

I'm not necessarily talking about those escort quests where the NPC you're protecting won't attack unless they are attacked (although that is very annoying too). Specifically I'm talking about the Scarlet mobs that hang out in WPL at the farms and attack the undead guys.

Sometimes it works, sometimes it doesn't. It just seems completely random, and there are a few mobs they attack that just seem to keep bugging out and resetting. I was literally attacked by the same mob 4 times in a row.

I got into his aggro radius and he came running at me, so I did what any normal player would do, I started wailing on him. Well once I got him down to 10% he bugged out, evaded and ran back to where he started, but since I hadn't moved I was still in his aggro radius and he came back at me, with full health.

This happened 4 times, as I hoped to kill him one of the times, but I was never able to. By that time everything else had respawned around me and I couldn't move without aggroing something else so I just ran away and worked my way back in again. Needless to say I was getting annoyed.

I don't think it was a bad decision for them to leave that stuff in there even if it doesn't work right. I like the idea of the holier than thou Scarlet Crusade taking it upon themselves to bring the fight to the Scourge, it's just one of those things that Blizz could probably fix if they wanted to, but it isn't high on the priority list.

Another thing I have been wanting to see, and is finally being implemented from what I hear, is quests that actually change the world for you, which they are calling 'phasing'. Like you escort someone and if you go back he isn't there anymore, at least for your character.

Will they do the same for the old quests? Of course not, but it would be nice. I look forward to seeing how this turns out. I always thought it was a little weird to rescue some NPC just go back and see them back there again.

I guess we really can't expect any gameplay upgrades to old content until they are done making new stuff. The only times I've seen this happen is if a patch comes out and it makes something unplayable. I remember after one patch the furbolgs in Ashenvale would all spawn on top of each other, making any quest involving them impossible.

For the moment we're stuck with what we have until they get tired of making expansions. Luckily it's a great game anyway, and the new stuff they're doing makes it even better.