

And in keeping with other collections, hovering over an heirloom you haven’t collected yet tells you where to get it. Perks of the collection UI are that you can filter for heirlooms usable by your class, aside from being able to screen for collected/not collected. For characters dual-wielding the same weapon (like a rogue with Vengeful Heartseekers) you’ll only need to buy the heirloom once, and then just spawn two of them.

This is a pretty logical constraint of the system. If you want to modify an heirloom, you’ll have to spawn it, modify it, and then mail it around like you do currently.

The Heirloom tab was something that then got delayed until 6.1. Without the ability to send mail across realms, that made players who had alts on different servers work much harder to get the benefits of heirlooms. As it stood prior to 6.0.1, there were a bunch of disparate methods to get heirlooms of different grades, but you also needed to mail them between characters in order to put them to use. Blizzard started talking about iterating on heirloom storage all the way back when Warlords was announced.
