I think if Red Sonya gets made into a TV series, i think Jenya Lano would make a good Red Sonya. Jenya is a beautiful Russian-born American actress, she had a small part as a Russian woman in BLADE (1998). She had a guest role in XENA: WARRIOR PRINCESS, she starred as beautiful desert scavenger Krysty Worth in the 2003 sci-fi action horror movie DEATHLANDS and recently appeared in CHARMED as Inspector Sheridian.
Still, she is my 1st choice, my 2nd choice is Kate Mara, 24 year old American Actress Kate Mara is best-known for her guest role in NIP/TUCK
and she recently starred alongside Mark Whalberg in SHOOTER.