I haven't seen this brought up anywhere yet, so I thought I'd chime in with my strategic genius.
I didn't catch it at first, but Teeming Spawn can be used to build your third base (for special victory) during the first Stage III regrouping phase. All you need is a unit on a third planet. This makes winning with special victory much easier, or at least forces Aldaris to play Destiny instead of Will of the Conclave.
Does anyone else use this?
In our last thirty games, we didn't reach stage III, so it's useless for us.