Disable unusable dungeon armor/weapon purchases
If you have a mindlip o you cat steps in your mouse or something and inadvertedly buy something you can’t use, it’ll get soulbound and will be usable only for the mystic forge.
They should either split the types if armor in different tabs in the vendors or split the vendors in three altogether. One for each type of armor.
They should not remove the option to see other types of armor, as that allows you o preview them.
I just had this happen to me as well. Purchased the medium legs from Arah when I wanted the heavy ones. I like your idea of only being able to purchase gear usable by that character.
I’d also love to see some way to turn a piece that isn’t usable by your profession back into tokens at the vendor. This would allow those who have accidentally purchased such a thing to undo our mistake.
I agree with the OP, put all the items usable by your class on tab 1 and all the items unusable by your class on tab 2.
Wouldn’t you still have the same problem if you accidentally bought 2 of the same item, or the right armour type with the wrong stats? Short of allowing a ‘sellback’ period I don’t think they can prevent this.