Rep isn't the subject matter, its the marks. Rep can be gained in both PvE and PvP (PvE is much faster for rep gain infact, you can get 500 rep an hr by yourself and 800+ with a group of 3). But what use is that rep gain for those that don't play PvP? Getting faction packages? The chances of you getting a set of armor with intellect and disipline out of those packages is astronomically low. The removal of matierals for marks is a pure negative. And when it existed, it was only a pure positive.