Vanguard - Server Merger Q&A @ Official Site
The Vanguard: Saga of Heroes team answer community questions regarding the server merge at the official site.
What is the future health & longevity of a MMO that is reducing its servers
[Hasium] Much better actually. With a healthy population on the servers it becomes much easier to find groups and make friends. Historically, many MMOGs have had server consolidations and gone on to have increased population.
Source: Sony Online Entertainment