since the retail version In run into this all the time... and it havent changed with 1.2 sofar
the AI keeps building starports on class 4-5 planets.... why? It takes forever to construct a warship there and the space could be used other way. Actualy, a human would never build a starport on a planet below class 10 (ok at least I wouldnt).
A script so the AI checks if it is of some importance to build a starport on low class planets would be nice (also some script the AI starts constructing some factories. Its fun to run into an AI owned pq 26 planet, just to see a starport, and a lot of labs, culture centers and other stuff, where noone with common sense would see any logic behind this.