Its quiet fun they add her then slap in alliance face silvermoon doesnt belong to alliance even though we have 2 sisters Windrunner one main story Alleria and her High elf sister vereesa windrunner both part of the alliance.
Yet Dalaran once an Alliance city people can roam freely inside just small portions like the portal rooms are of limit but still.
I could go of topic on this topic but its rather like someone at blizzard hate the idea of a 3 Race combo Void Blood and high elf.
Sylvannas windrunner i dont even know if she will come back.