Thanks for the comment, just checked out the videos and they're pretty helpful.
Couple of other questions, though I dunno if some or not all of them should be asked in a new topic.
1. Can I assume that AI research is based on a hard coded script that tells them what to research?
From your video where you added Infiltration for example. If you were to give that tree to an AI I assume it would have no clue that a new research item was available and would probably skip it all together never ever trying to research it.
2. Is it actually possible to add larger hulls? Super massive for example?
Is that even within the scope of the game? I expect we would have to design new ship designs for all other alien races and then some more advanced stuff changing a lot more than just adding a research item.