I thought the tile forge was a great idea, only to be disappointed by the fact that the only way for you to see them is by a custom map.
It should be relatively easy to code the ability for you to swap out a tile(city improvement) from a custom faction with the one you've created.
---------
Now the faction creator, is it possible to add Hair color/Skin color sliders into it?
It is already embedded into the .xml file of those factions, it just seems to be missing from the ingame GUI itself, same went for WoM.
Thanks