CHANGE THE WEAPON ITSELF
I dislike the concept of Thief using an AXE as weapon...Thief became a lumberjack now?!
Last expansion was scepter which was still ok-ish but not what you expect for Thief design even though you did a good job showcasing the Specter which was really appealing to many of use...But this time since we don't have new trait, we want weapon that fit the Thief, so hopefully you change it to Sword off-hand or GS. (In my dream ?)
If not, then you have to rework entirely on the concept of the Axe OR even better, replace it to off-hand this way we have more options (D/A, P/A , S/A, Scepter/A)