The map has in the init trig enable advanced triggers... you should remove that, and this is cool, sorta reminds me of starcraft unit upgrades. With those yellow ^ things. I like the veteran,elite upgrades, but its a little weird trying to understand the spells text (explaining what this does) in french... But those models are very cool.
Woah... Check out the maps script on the top of the rest of the triggers... Its huge, reminds me of vex's caster system.