I playing this map 3 years, saw all versions from 1.0 to 3.5 and I want to say that all changes makes for balance. No one with whom we played before spoke negatively and the majority did not notice the changes, even I, who playing so much time.
Unless the radius of v3 missiles can be noticeable - but for this map this is the ideal solution, otherwise v3 is an absolutely useless unit.
I am an ardent opponent of mods - I don't even like Yuri's Revenge. The map has a great balance.