Why ?
Where's your Horde representative among the Kirin Tor ?
There's none.
Dalaran is letting Horde to set foot again in it for the greater good and because Blizzard is too lazy to design a new capital for Horde players.
But the truth is... the Kirin Tor is completely Alliance, Khadgar is Alliance, and the Horde was not allowed to have a representative again in Dalaran.
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So maybe you should learn more about the void elves.
Telogrus is condamned to disappear, and void elves still consider Quel'Thalas as their homeland.
And no Dalaran isn't neutral. Maybe in your headcanon but not in the lore.