So first off. Judging this as exactly what it is, a Punisher one shot story, I enjoyed it. I think the idea of Frank killing off most of a crime family, leaving behind one person, and that person feeling the same way Frank does and taking revenge. That works well.
Frank is his own worst enemy. Everything that happens is Frank's "fault".
I also think that Frank basically being unsure what is real but making the choice to save the little girl and her family shows that while Frank may seem out of it and unsure what is real... When it comes down to it he knows what he needs to do. If Frank were just a killing machine with no thoughts, he would have killed Ma Gnucci. His choice to save shows his humanity. Frank knows what he's doing.
Second. Why was Ma Gnucci injured? I figured we would have seen Frank at least accidentally injure her. I would have liked an extra bit of story where Frank creates the monster that is Ma Gnucci. He doesn't have to be solely responsible, I think it's clear she has a warped sense of reality. She ignores her husbands deeds, she ignores her youngest child's likely crimes. There is at least something I would have liked to see play out.
Third. This was a weird one off. It doesn't feel like a continuation of Daredevil Born Again season 1. This feels like a story that exists between Daredevil and Daredevil Born Again.
Also last we saw Frank at the end of Daredevil Born Again he killed a dude and broke out. After breaking out he was absent from all of Daredevil season 2, and this is where he is? It doesn't really seem to fit.
While I can only judge Frank from the trailers, his next appearance is Spider-Man? I have Ma Gnucci questions. Is Ma Gnucci in Spider-Man? Tonally that looks like a very different Frank Castle compared to the one I just watched.
That felt like the pilot episode to a show that isn't going to exist. Alternatively... New Punisher TV show to be announced soon?