Daredevil- I Think Daredevil should primarily, in the first season that is, fight crime lords and get caught in between gang wars, with Kingpin being the primary antagonist and have an episode or two introducing the Hand for the next season. The villains I think should appear are:
Kingpin- He will be the big bad manipulating and controlling form behind the scenes.
Bullseye- He shows up as an assassin contracted by the Hand to eliminate Stick, Daredevils master. This causes them to develop their rivalry. Also have Elektra show up in this episode.
Calavera- One of the four crime lords of Hell’s Kitchen. His unique ability to use people’s guilt against them can help to flush out Matt’s relationship with his father.
Owl- One of the four crime lords of Hell’s Kitchen. This guy is nasty and has razor sharp talons as well as being a prominent Daredevil villain.
The Rose- One of the four crime lords of Hell’s Kitchen. He could make for a very different crime boss being calm, calculating and gentlemanly.
Coyote- Sense Spot is probably considered a Spiderman villain here’s the next best thing. He’s a psychopathic mercenary that can create portals to different places. I could see him as one of the enforcers of the crime bosses.
The Eel- Another potential enforcer for one of the Crime lords, he’s basically Stingray but evil.
Paladin- At worst an Anti-Hero at best a potential ally. This mercenary could be friend or foe.
Mauler- A former weapons manufacturer who used his inventions to become a contracted killer, he would be ideal as an enforcer for a crime lord.
Mr Fear- He could be one of villain in season 1. He’s basically Scarecrow but also not scarecrow at all if that makes any sense.
The Enforcers- Consisting of Montana, Fancy Dan and Ox, they are the Kingpin’s elite enforcers who protect his business interests.
Typhoid Mary- One of villain season 1 and return in season 2. She could be an escaped experiment from Noah Burstein’s lab to tie in too Luke Cage (more on that in the Luke Cage wish list.)
References- Its been revealed that the Marvel Netflix shows are going to be for the super fans so we should expect a lot of fan service and references to characters who may appear. For the Daredevil show I think that they should mainly reference and allude to vigilantes. For example have a newspaper discussing whether Moon Knight is real or a legend. A news report detailing The Punisher attacking a mob restaurant. Night Thrasher, Whit Tiger, Black Tarantula, the Shroud. There's a lot of vigilantes to choose from.