I really didn't think Galactic civilization 3's editor was that food.
How do you know that? GalCiv 3 isn't even out yet. Also, what does it matter, how food the editor is, as long as the game is edible?
I recommend that they look at the Civilization 3's editor.
Why? The Civ 3 editor was okay for it's time, but there are much better examples out nowadays. The Starcraft 2 editor, for example, allows you to completely change the game. Don't like RTS? Turn it into a Shmup!
I would like to be able to make a better map,
GalCiv 2's map editor was good enough for this.
more races,
We could do that in GalCiv 2.
and able to make my tech trees
We could do that too.
Able to give stock races a modified or made up tech tree
I did that in my mod. So, yes, that was also possible.
What I'm saying is that if we had a better Ai I would use it, but modding is a little to difficult for me.
Modding in GalCiv 2 was as easy as it could get. Granted, there are probably games out there, that are even easier to mod, and some things were just impossible to do (like changes game mechanics). However, if an idiot like me can easily add new planetary improvements, techs, and so on, into the game, without even touching the provided editors, then everyone can do it.