It seams silly that when a new colony starts they have build the state of the art Factory. In reality they probably don't have the material to make such factories on hand and would have to get it from the planet. To process this material they would need a factory. Wait they don't have a factory yet. Wouldn't make since that a colony would start a simple factory to produce the equipment and materials for a more advanced factory? It takes for ever to colonize a new world once you have gone farther up the tech tree. I had 2 ideas to rectify this issue.

1. Have a check box called "Colony World", and when it is checked the building options will only show the lowest tech building that has not yet been built. This way once the basic factory is built the materials could be made for the next advanced factory and so on and so forth.

2. Have buildings be available as modules on ships. This way you can store a prefab building on a colony ship that could immediately be built once the world was colonized.