You can play with other people on different servers now. Just gotta be in the same group and everyone is placed on the person with the highest levels server for the duration.
I might consider re-subbing to play the new Draenor graphical update. But I'd play on a PVE Server.
True major cities are not cross realm. However, I think if you are group with someone you can go pretty much so anywhere else together. Including the Pandaria areas that are not CRZ.
I'm liking these new stat squish changes. Looking forward to the expansion!
Basically, you still do the same amount of damage but the numbers are not crazy high anymore.
I'd like to learn the abilities and general play style of all classes so that I'm better off in PvE and PvP. In most games you just play and learn over time, will this work fine in WoW or should I spend some time doing some reading?
In Dota there are also hundreds of abilities to learn but I know what each one does, along with damage and cool downs. Most was learned just by playing the game and reading tool tips but this might be a bit harder in WoW since you cannot scroll over abilities of players like you can in Dota.
I think going over the core abilities tab for each class should suffice for now. Correct me if I am wrong.