I never said the exchange rate was great. It's obvious that Bungie did not want there to be a straight way to convert Vanguard marks to Crucible marks. This is why they removed the selling of mats for marks. I meant it would break the game in regards to Crucible marks because it would have been stupid easy to get Crucible marks without stepping foot inside of an actual PVP match. Why should anyone get rewarded for something they didn't even do? Regardless there's not much point in arguing over it because Bungie controls the game. If they want Crucible marks to only be earned from actually playing Crucible then it's within their rights to make it so, and they have. Crucible marks can only be earned through playing PVP, while Vanguard marks can be earned in a lot of different ways. This is balanced out by the fact that faction rep can be gained in both PVP and PVE by wearing the faction class item. This means you can buy your armor/weapons faster from a faction but you are limited to how you can get your marks.