Circumstances would be different obviously, but Hank still would've found Walt to be Heisenberg, and Lydia/the Nazis still would've needed either Walt or Jesse to come cook for them, one way or another.

Maybe if Walt hadn't kept that Walt Whitman book, I would believe that Walt effectively tied up his loose ends... but too much of Walt's past is still floating around out there to believe that nothing Walt did would've ever come back to bite him.

Really, the "what if?" game could be played with any of these characters. "If someone did this, then this wouldn't have happened" etc. But when Walt got involved with Lydia/Nazis in the first place and left that Whitman book out for Hank to see, it's impossible to say "if Jesse had just stayed quiet, none of this would've come to pass."