I don't know my mains or subs yet, but I have some theme teams for fun I've been mulling over
Team Contact Sports: Goro, Joe, Nelson
an Ancient Art: 3 of Tung, Chin, Mian, and Mui Mui
Armed and Dangerous: 3 of Chang, Choi, Nak, Love Heart, and Billy
Glorious Beards: 3 of Antonov, Chang, Gang-Il, Tung, Chin, and Xanadu, maybe Robert and Bandeiras
Bandanas: Ralf, Billy, Zarina
Earth, Wind, and Fire: Kukri, Joe, choose a character with flames
XYZ: Xanadu, Yuri, Zarina
Keep it Classy: 3 of Hein, Robert, King, and Mature. If either gets his suit as an alt Geese or Billy, and depending on his fight attire Antonov
Team Ninja: Andy, Mai, Bandeiras
The list goes on and on and on