So basically the only forsaken race who are at least somewhat eligible for the tinker class is the Lightforged Undead. (=Undead Paladins and locals condemning Sylvanas blight who wants to be reintegrated into the Alliance).
I can not imagine Horde Forsaken have any connection to tinkering whatsoever as all they do is destruction.
The Horde Forsaken are even worse than Goblins in that regard as they aren’t even doing it for profit. Just for pure bitter revenge against everything and everyone. Have tinkering absolutely no standard?