Asked for or not you can now have Vehicles!
Also, animals will populate the Items file and can be found under "Mount". Whoever says you can't mount a falcon is lacking imagination.
There is a checkbox defaulted to create your .mod files as STATIC so you can't butcher your items once you have them, however you are welcome to uncheck the box and let the anarchy reign.
For the record, there are bound to be some edge case items that don't react well to the rules. For instance, I found when importing some of my custom items the mods added in GCA don't do all that well. I settled for passing the mod info by appending it to the 'description'. At least that way you know what to do.
Next UP - I guess I'll think about adv/disadv, skills, etc just to have it all rounded out.