This changes will add him some utility to confuse the enemy by a ghost making enemy turrets your turrets or with mines etc.
100hp and more movement speed will be nice
So, how do you think the TF2 spy works ? He has counters, this will make a good choice go with recons, giving more utility to vassilis and red eyes. Also by forcing him to disactive the refractive armor before attack, you will hear the uncloack sound, and if he is far so you dont see him, you will see him coming