Salutations.
I'm the developer in charge of our treasure system.
You'll be pleased to note that random treasure does not, in fact, discriminate in any way based on race, class, gender, time of day, favorite color, or any other means.
It's just a random roll on a table of results that I or another designer has set up.
We have no plans at this time to make chests have class-based treasure, as this would have a negative impact for many players. When you find items that you are unable to use, I'd suggest selling them to a vendor, trading them to another player, or putting them on the auction house for another player to purchase.