Hopefully, if the atmosphere is the same, I am looking forward to working together with other players. I remember helping each other to obtain gear, consumables, enchants, gold for mounts and skills.
Especially when it comes to twinking. I can't even say how much time we spent gearing each others toons to have the best gear. Looking at the AH for each other to snipe low priced BIS items. Having someone die and then completing their quests to get items for our 29's out of STV. Doing the Gurubashi Arena to get the trinket for our 19's. Killing others during the fishing even so we could get the hat. We spent a lot of time trying to min/max our low levels, even more so than our mains, and I miss that.