What I'm thinking of is applying the TLT mechanic to green dice.
Let's call this upgrade the 'Evasion System':
You roll 3 green dice two times. If you get at least 1 evade result in a roll, you get an evade. This way you get more reliable 1 or 2 evades, but no lucky 3 evades. It would be a nice way of balancing things out and a more reliable way of knowing if a ship is 'evade-durable' and diminishing the effects of luck (as the TLT does).
What do you guys think?