Dang hope you get one. I k ow I did a Petra bounty the other day and it gave me a key. I don't know if PoE chests still do it, but when HoW dropped I got an exotic on each of my toons from hitting the big chest for the first time. It was pretty awesome. That day I picked up my 6th Ghorn, 5th Suros and a 2nd Armentarium( Titan chest, however you spell it).

You get one key per character each week upon completing any one of the bounties per week... you're supposed too anyway

Who cares?