I have been able to add BG, FG, Logos and Portraits to the editor and be able to make a custom one.
Others that have problems making the right pictures (size, type, transparency) may want the ability a choose a picture from file and all would be made for them.
Another thing is when I want to edit the faction I have to click on "copy". could you change this to "Edit".
Last I want to make my Tri start on a frozen planet and only be able to colonize regular worlds until able. Basically switch the general colonization and frozen colonization with each other. For this do I need to change the tech tree.