Interesting idea Armageddon. But, it has shown many times before that the ones that have the "Speed/Agility Boost" usually are the best vessels in combat. A good example is to look at the current bombers, which one are considered best or even overpowered? The Catamaran and The Red Catamaran, why? Granted they have a bad hitbox but they are very very fast. And nobody cares if they got low armour , because what matters usually in combat is how fast they are, and how maneuverable.
What I'm trying to say is that in your suggestions, the Kusari vessels will have the best ships since they will be the most agile ones. We shouldn't change the VHF around so much, they are currently the most balanced class out there. Most Light Fighters (with the exception of some bugged ones and maybe some completely useless ones) are also very balanced, What we need to focuse on is the bombers first. But I'm not good with balancing, so I leave that stuff up to someone else.