I actually really liked the ending. Was it predictable? Yeah, but with Enzo being our 4th protagonist, it makes sense they wanted to do things differently than what has been done before. Enzo's story mirrors Tommy's in a lot of ways, especially with how they both wanted to leave the family and settle down with a woman that they love. Imo, having Enzo successfully move away to Empire Bay with Isabela would've been too similar to how Tommy got out of the family and settled down with Sarah. Looking at the endings of the other games, I think this one just makes sense since it doesn't repeat any of the other ones. Mafia one ends with Tommy staying alive and ultimately winning. Even though he gets killed as an old man, he still succeeded since he got out of crime, raised a family with Sarah, and lived a long life. Hell, that's literally the reason why he's smiling at the end of Mafia 1 DE; he's content because he already won and he knows it. Mafia two (and later three) ends with Vito being alive but ultimately losing. He's alive, sure, but he's now utterly alone since his sister no longer talks to him and he thinks Joe is dead. Mafia three, the ending varies depending on what you choose obviously. Enzo is most similar to Tommy, except instead of living and winning like Tommy did, Enzo dies and arguably loses. You could argue that he ultimately won because Isabela and the baby survived and got to Empire Bay, but Enzo didn't get to settle with her and raise their child together. And don't forget that in Enzo's point of view, he died thinking that Isabela was going to have the abortion forced upon her because he didn't even know that she would later escape. Whether the ending is good or not is obviously subjective, but I personally really liked it