Guys, you are completely missing the point here.
Why the mods got introduced in the first place - to bring some diversity. So everybodys Rey wouldn't be exactly the same. And with inbalanced primaries/secondaries you are forcing people to get exactly same mods and at the end of the day we will all have exactly same characters - which is not that fun in any kind of game.
I'm usually finish first on the arena, so I'm far from being salty and stuff, but battling exactly same teams every day is annoying as hell. And you want to make them 100% similar by establishing the one and only right mod combination.
