How is ENY broken?
A number of ways, but it boils down to this: it doesn't alleviate what it is supposed to alleviate. The most significant way is that it doesn't address who's fighting who - when side A has 90 players, side B has 50 players, and side C has 70 players, but everyone from side B and C is fighting against side A and none against each other, side A is going to be outnumbered and yet it will have a terrible ENY. Side B will often have a numerical advantage and yet it will have 0 ENY and 100-perk 262s. But that's really another discussion.
The way that this thread addresses is that you routinely see 80% of the people in one country piled into one arena, which leaves everyone in both arenas stuck with either a high ENY or a big numerical disadvantage. For the individual player, there's nothing to be done about it: one or two players switching sides doesn't change 20+ player numerical advantage, so you're still left with a choice of flying a P-40B or facing 3-1 odds.
Linking arena caps to the countries won't address a large imbalance in the overall number of players online for each country, but it won't make it any worse either. What it will accomplish is making it harder for all the players on one country to pile in the same arena creating a huge imbalance for everyone in both arenas.
Of course, if the ONLY purpose of ENY is to get people to fly a greater variety of planes, I suppose it does that, but that isn't what we're told is its primary purpose.
Anyway, as I said in the original post, that item was more of a long shot. I don't see how the other two could hurt anyone, particularly making the caps go to 450/400 at midnight CST like they used to. There's no reason to have caps of 100 and 30 people in one of the arenas at 1:30 AM Eastern - it just doesn't serve any purpose to force people into an almost empty arena for 30 or 45 minutes before the switch to Off Hours.