One of the things I enjoyed the most was seeing in chat a player that didn't know how to get from Iron Forge to catch a boat to the other continent, and I'd have fun showing him how to get through the Wetlands to the port. The Wetlands was a higher level than we were at the time the quests wanted us to visit the other continent, so it was a dangerous journey and you'd usually become friends by the time it was over.
Of course everyone knows how to get there now, so I don't know how they can recreate the fun of helping someone out that is inexperienced. The same goes with dungeon fights, etc., -- everyone will already know all the tricks I expect.
I certainly miss the days of exploring a brand new world, the likes I had never seen in a video game before, and helping others (and being helped by others) along the way. Wonderful times! :-)