So I was playing the campaign again and I was watching the cinematic from Maldraxxus...
Margrave Krexus reads the letter from Margrave Akarek:
"I offer the key to saving Maldraxxus, an unyielding warrior with the skills of a master spy, a key to many things"
I haven't seen anyone pointing that out so.... is Draka they key from Maldraxxus that the Jailer is looking for?