Can we get better a vendor UI already?

[Rongway]

In Wow, you can install an addon that automatically sells all your junk when you open a vendor UI.
I suppose SE could build in something similar. However, it might be more difficult here. because I don't think there's a trash item designation like in WoW, where the item name appears gray.

There are only about 20 vendor trash items in the game (all the items that include "Exchangeable for gil" in their Item Helps). It would be easy enough to go off a list of item IDs.