Yep, i eventually understood the new mechanisms of JASS thanks to those dudes at wc3c, especially D3zmodos.
And the result is: CC's broken functions are currently being repaired one by one right now
The aoe shock when they hit people is already running, i am currently fixing the jump, and the rest will follow in the next minutes.
Edit: The jump works too now
i had forgotten how awesome it was lol.
Edit: everything is now fixed. Colossi are back to their old level of power, and now the map can be improved at will
Expect many player-friendly changes in the next version, but for now, enjoy the comeback of the giant golems