Dual Blade? What secondary do you have in mind first?
What's left is to normalize all Assassin Strikes and improve Stalker's old sets (Claw, MA and EM)! You don't need to bring back the missing PbAoE attack. You just need to make the existing ones better! For example, make Slice a WIDER and LONGER cone.
i am looking for a db stalker forums that do good dps and cap def i don't care what the money cast is