These new Vikings gave me the idea of a warriors line. They could do all of the legendary fighters throughout the centuries:
-The Romans (mentioned before and has many possibilities even with Gladiators as well)
-Spartans (or more broadly, Ancient Greek)
-Zulu
-Samurai
-Medieval knights
-Ancient Egyptians
-Huns (although this may be controversial but a massive empire nonetheless)
-etc.
Also, I would love a fantasy world setting, more specifically D&D. I would love to have a super-poseable, highly detailed dragonborn or Goliath, not to mention orcs and goblins and dragons and Owlbears and other baddies. Plus I feel that D&D is on the rise in pop culture and who wouldn't want a micro action figure of their favorite character instead of a tiny little statuette.