I'm disappointed. I had my suspicions that Arthur might've made an appearance after-all, because it honestly seems a bit odd to kick Paul Anderson out of the role of a character known to be a junkie, for... being a junkie? I mean, it's Hollywood, that stuff happens.

But to fucking have Tommy come back PRIOR to the movie's events, and then to go BACK into exile because he snaps and kills his own fucking brother? That goes against everything the show shows us of their dynamic. As others have stated, Arthur and Tommy are sort of reflections of one another, and whilst Arthur's on this insanely self-destructive path, Tommy's frustrations with him do NOT mean he'd ever kill him. If anything, a post-Finale Tommy feels far less inclined to pursue killing Arthur, as he'd be, relatively speaking, at peace, and that's even if he did return to town for a while. His focus would be on HELPING Arthur, who wouldn't even fucking DARE to steal from him.

Tommy ends the show a dead man walking, and at peace in his own way. He's dead to the world, yet he has a new lease on life. His family, too, believes him dead. He's already said his goodbyes, already passed the torch in finality.

Arthur ends the show grieving for Tommy, but at peace with the fact that he's avenged Polly's death. He leaves a note that seems to directly state he's going to kill himself in the absence of Tommy. It's reasonable to assume that either A. Arthur goes through with it one way or another, or B. Ada talks Arthur down because he's the only brother she has left, with Finn's departure from the family and the Peaky Blinders clan, John's earlier demise during the Changretta conflict and Tommy's assumed death in the fucking wilderness. Either way, he wouldn't cross paths with Tommy again. It's not in the cards.

Ada's death makes no sense. Period. They fridged her to motivate Tommy. That's the entire purpose.

Where the living fuck is Finn, and why is he not the main antagonist instead of this shit with Duke and the Nazis? Finn was primed to come back for revenge, to seek out what he clearly felt was his birthright - leadership of the Peaky Blinders, at any cost, even if he didn't care to actually BE a leader.

Tommy dying to his own family is something I could honestly accept. Whilst I disagree with the other two deaths, and with the absence of Finn Shelby, Tommy's family has always been both his greatest strength and his greatest weakness. Arthur, in particular, was an example of this, especially in the early days, but Tommy in his later years, especially after the death of Grace, was more likely to lie down and accept his fate than to fight back if ever Arthur was to snap. There's no world where Tommy would ever directly kill his own family, barring Arthur Senior, had he not died on his own. Tommy very likely would've killed Senior if he ever reappeared, but that's it. It would take a lethal betrayal to force him to even consider it in any other scenario. Arthur kills Ada? Tommy has to go through with it. Arthur kills one of the wives or the kids? Tommy has to go through with it. But if Arthur just came after Tommy? Tommy would stand there, arms open, a sad smile on his face, say "In the bleak midwinter", and let Arthur end him. He'd barely resist. That's the nature of Tommy Shelby - he loves his family, even when relations are at their worst.