And Season 3 would be Welcome Back Frank + Barracuda (Barracuda would replace the Russian and Ms Gnucci's plan would be to cut off all power to New York to win a contract to a crooked energy company), then Long Cold Dark then In The Blood. Make it three arcs like Agents of SHIELD is with each arc building up to a gunfight every 4-5 episodes.
New character casting choices would be Monica Bellucci as Ma Gnucci. Terry Crews as Barracuda. Laverne Cox as Fifty. Sasha Grey or Dree Hemingway as Alice Ebbing and Wayne Knight as Mr. Bumpo. Not sure who should be Joan The Mouse, Spacker Dave, Martin Soap or Harry Ebbing. Alice would be the one who tips off Punisher but I'd also make her survive the story in the same way that I'd have O'Brien survive Season 2.
I feel like my perfect casting for Joan is [Female, any race, 32-37, quiet and soft-spoken but always finds herself in trouble through no fault of her own] and my ideal casting for Harry is [Male, any race 52-26, suave yet slimy, a deeply corrupt businessman out to undercut his rivals through the use of illegitimate business associates], Martin Soap should be [Male, 33-38, overweight, any race. A deeply disillusioned and cynical police officer. Identifies a pansexual.]
Season 4 would be based on the Greg Rucka run with episodes 4-8 as an interlude based on The Slavers. I'd like to see Eiza Gonzales or Genesis Rodriguez as Rachel Alves and I'm not sure who should be Stephanie Gerard, Dove, Chris Poulson or the Bulats.
If Season 1 was First Blood, then Season 2 is based more on Rambo 2 and 3, Lone Survivor and The Living Daylights. Season 3 is Death Wish, Taxi Driver and Straw Dogs. Season 4 is The Professional.