Anyone has some clue on why was the Deadly Accuracy talent was changed to Dodge in the Assassin specialization of the Bounty Hunter? It doesn't make sense for me, at least flavor wise…

I'm with you on that one. They made the change in a big sweep to add more defensive talents to various talent trees. My opinion is that Deadly Accuracy should have stayed, and so I normally houserule that it did, depending on player proclivity However, Dodge is a very useful talent that might not seem so until you actually see it in play.