My suggestion
WvW: is to put rank WvW on account and not on character (sometimes people want to change character and have to level up the rank again).
PvE : put amount of stacks in bank about materials like 500 or more and not 250 (with some especific ascended materials you get easily 250 and not all the people have slots in theirs banks ).
PvP : put the legendary skin PvE to PvP.