That’s how I feel as well. Silvermoon is a Horde capital city. Even if Blizzard someday allows Horde and Alliance players to group up, I can’t imagine that Alliance players will ever be welcome in Silvermoon.
I really want Silvermoon to be updated though. The Exodar and surrounding areas could be flyable with the flip of a switch, but Silvermoon, and certain parts of the surrounding areas, need work to both be flyable, and to just be touched up to more modern levels of quality in general. It kills me that Silvermoon of all cities doesn’t have a barber or a transmog NPC. I mean Cosmo Wrench… that little flight path stop in Netherstorm of all places, has a barber!