Greetings Warmane & Community,
last year I played some retail WoW, and the only thing I really miss is the AOE Looting! I think it's very annoying to loot every single Mob in a pack, especially when there are unique items and you loot the same mob over and over again.
I don't know if the WotLK client is compatible with such an addition, but I think it's worth trying to add it.
My suggestion should be pretty self explanatory but feel free to ask any questions and I will do my best at answering them :)
Best Regards.