And I disagree. If you join a faction and see that it has a prerequisite of Crucible marks for their gear, then guess what you need to play to get it? Earning rep for Faction gear outside of crucible? Irrelevant and useless. The currency marks you need are only earned in PVP(now). Can PVP'ers do the opposite and trade their materials/marks that they gain in PVP for PVE rep and marks? Nope. Unless you mean faction rep then guess what? It makes sense in both modes.