New tier challange would be good....
http://i67.tinypic.com/30k6as4.png
Must be a substantial amount of dust on those military text's or he needs a new feather duster or something.
A gear shop similer to the shard shop would also help. Were you can swap out gear you do not want for a currency , that can be used to purchase rare gear.
Same could be done for all those I and II lvl abillity mats that stock pile much faster then can be used.
I think the devs got it right with the mods. You can sell unwanted mods. That was a good call by the developers. No one ever complains about having to many mods.
Gear and abbillity mats ( lower tiers ) do need attention however.
One idea is you coukd swap 100 lvl 1 abillity mats for 3 purple mats., 50 lvl 2 abbility mats for 5 purples or something to that extent.