Like I said: [quote]* Why couldn't you just remove the (reputation/glimmer) gains and leave the option to trade materials for marks? At an exchange rate of 5 to 1, would being able to swap one type of Mark for another really have been so bad? You provided so many great new ways to aquire extra materials, than took away the only other feature they could be used for. *[/quote]

Gotcha, I misread your edit, sorry for offering a reason you already had listed. I guess the fact that we can't do both exchanges answers your question of whether Bungie staff thinks it would be that bad to have a way to turn one type of marks to the other. Maybe someone at Bungie will respond and explain their reasoning.