But as long as the Emperor is alive, Vader is on our side, which means that if Doug doesn't cause trouble, he will still help the city, not the mafia. Because if he starts betraying us now, we will simply execute him so that life doesn't seem too sweet (or we will rely on Jabba to kill him, but I personally don't believe in such fairy tales).
Also, if it turns out that Doug is not Vader, the real Vader will know what to do.
We should probably find out about Jabba and arrange some kind of alliance with him, because if he sides with the mafia, I think his time will be up.

