I agree with you.. It can be three ways.. I was exchanging materials to marks to just buy weapons too.. And yes i like to play PvE more than laggy pvp, so i get lots of materials that once i exchanged 800 spinmetal for it.. So just bcos of few people have lazy ass to get materials they changed it? i think, If you can do pvp it will be really easy for people to collect materials in five minutes, but if people dont like pvp, it is really hard to get retarded crucible marks.. Also instead, they would have put a rotation on quartermasters for weapon change by xx hours so we didnt even need to talk about this things.. They can even just add vanguard mark exchange with crucible thou.. that can make some difference.. But noooo they have to find something weird.. like 10 mark for 20 spinmetal lol