In patch 9.2.5, Blizzard added the quest Victory for the Sindorei. This quest is available ONLY to blood elves and rewards the Elusive Emerald Hawkstrider mount. As a bonus, if your character is a blood elf paladin, then you will also receive a cosmetic item, Ensemble: Blood Knight's Dedication. Classes that can use polearms, will also receive another cosmetic item, Veil-Touched Ranseur.
This was a super fun quest and takes about 45 min or so to complete. You will pick up the quest chain from Lady Liadrin. You can find her near the portal to Orgrimmar. The quest takes you back to Silvermoon City and then to Tranquillien as the Scourge are suddenly invading again in great numbers. Speculation is that because the helm of domination has been broken, no one is really controlling the weaker-minded scourge and as a result, they are attracted to a new, unknown source of power. Your character will be sent both to Bastion and Maldraxxus to gain their aid so we can defeat this new unknown foe (you will find out who it is). Upon completing the questline, you will receive the rewards mentioned above :D
I have personally always loved Silvermoon City and the Ghostlands. I have a myriad of blood elf characters, they are hands down my favorite race to play.