I would assume that Black Lion Keys are one of the main constant cash flows for ANet’s gem shop. That being said, I think it would benefit both the development and the player base if the chest offered (on a common-uncommon basis, not astronomical RNG lottery) T6 materials. It would give players incentive to alleviate the 100+ chests to one key ratio, as well as provide a meaningful item from the chests for players that aren’t interested in the current rewards.
I can see how this could evoke player protest becuase you’re essentially buying out grind time, but it is no different than buying gems and trading for gold.
Thoughts?