I have a few requests for specific characters, but more for general themes or teams they should complete. I've listed them in no particular order.
1) Peter David X-Factor characters (either current or 90's). I would enjoy either, but the modern iteration is the more likely to be made, I think.
2) Classic Silver and Bronze age villains (Bartoc, Tigershark, Grim Reaper, Arcade, Baron Zemo, Molecule Man, Wrecking Crew, Stilt Man, Purple Man, The Owl, Titania, Radioactive Man, etc). They dont necessarily have to be in their old costumes, but many of these characters are well deserving of figures and would add some diversity to our collections.
3) 80's & 90's X-Men characters. I especially want a classic X-Force Cable and a figure of X-Man (Nate Grey).
4) U.S Agent, Red Guardian, Classic Captain America and any other character who they can make by re-using the Heroic Age Captain America mold and a new headsculpt (although they should use stronger plastic for the knees)
5) The Guardians of the Galaxy and cosmic-type characters. Quasar, Star-Lord, Rocket Raccoon, Gladiator, Thanos, Blaastar, Gamora, Modern Nova, Mantis, Major Victory, etc. They opened up a can of worms by giving us a modern Drax. A character like Groot as a BAF could even pull double duty, helping collectors of both the Universe and Legends lines come closer to team completion.
6) A new Daredevil and Bullseye with the updated articulation. The last Hasbro DD sucked, and the recent Marvel Universe 2- pack has me envious. It really shouldn't be that difficult to make a proper Daredevil figure.
7) Modern and relevant characters like the new Venom or Scarlett Spider. A figure would really help these characters get some much needed attention.
8) More classic female characters and a more diverse selection of female molds. At least make one with a more robust frame since the current females almost all look too skinny.