Very cool, and confirms what I've suspected. However, very early on one can get by with a field generator only, till you get started. What is critical is to have troops (and fighters, if possible) on your specialized planet, because if you lose it, it can cripple you at a critical stage. The idea of a General there is one I shall try soon. Thanks. I tend to build the defenses quickly, while the construction yards (or whatever) and being built. This is worth the extra effort. For construction specialisation, I often use the nearest rim system, and usually escape the enemy's attention longer.