User blog comment:DirgeOfCerberus111/An Alternate Universe? Let the heresy begin!/@comment-1536954-20110907235348/@comment-2253300-20110908015957

Very astute. However they might be able to expand considerably once the Imperium collapses. I also have a theory that the seemingly ideal harmony of the Tau will begin to corrode as they grow bigger. It is a rather well thought out idea. Maybe I will post it sometime. Anyway it is possible that they will develop proper Warp Drives by assimilating Psychic species like the Nicassar.