Xentelian’s Unit upgrades
Xentelian’s original AoM:TT Unit upgrades mod ported to AoM:EE. Mod makes it so that unit textures change when they get upgraded. More info on readme txt.
I got Xentelian’s permission to upload this ported version.
original version:
http://aom.heavengames.com/downloads/showfile.php?fileid=9850