tom needs to keep subzero yes, but he needs a solid second main that can become just as good as his main, you know Tom will get top 8 at tourneys but sub is mid tier or lower, he needs a character to deal with a lot of bullshit characters. and btw I dont think that second character is raiden, raiden will only try to do the job his subzero probably does better. he needs to level up that kenshi imo.