Vault Key (Add a Common Vault troop to the Rewards)

I would like to see a minor change to the Vault Rewards. Now that there are a fair number of Vault Troops in the game EXCLUSIVE to the Vault trying to get them all to Mythic without using a precious Ascension Orbs is a futile endeavor.

So similar to GW giving out the Guild Guardian troops for participating Guilds. Using a Vault Key and ‘winning’ the battle should award 1 common Vault troop standard, plus the normal RNG items from the troops killed. The player must still use hundreds and hundreds to Vault Keys, and there is no guarantee you will get the one you want… But the is an opportunity to make some progress.