I think we should be able to buy reputation with legendary marks. Having trials and iron banner and the weekly and dismantling legendary gear nets me an immense amount of marks that I can't really use if you've purchased what you want from the vendors. What if I was able to use marks for reputation? I'd have a chance at a "roll" for a weapon or armor of my choosing vendor. Something like 200 marks for a one level of reputation. That's about the same cost as buying one weapon and one armor piece using marks. What do you think?