For all the hassle which is acquiring Tyrande skin (or any Hearthstone skin for the matter) the final product isn't that impressive.
It's an (almost) static image and 10-something voice lines. That's it. I think Starcraft units have more voice lines and Overwatch heroes can't take a turn without saying something about the scenery, the enemy or their allies.
You could have voices for doing a big hit, or meeting ANY legendary, or even interacting with the scenery. The possibilities are there but I don't tihnk the interest is.
Has Zarya would say «I think you can do better than that»