The percent based ENY as it is currently is a failure. When overall numbers are low, ENY is an overkill. A few player advantage, spread over the map is meaningless, however when the numbers are higher, ENY is under applied, allowing one side a 40-50 player advantage while having an ENY below 5, the point where the un-perked planes start becoming unavailable. Numbers like 95-95-135 result in an eny of ~4.5 for the big country. What kind of balance is that? Aside from the cost for perk rides, its a non factor. I'm not suggesting it level the playing field, but if you are going to have ENY, make it a factor already.