I kinda wish Capsule Computers made earlier SF Titles for the DS-DSi. And remade The Original Street Fighter, so it can be more known and actually playable.
But moving on... basically choosing a Street Fighter character(or two) from every generation of the entire series... excluding EX.
1st Generation:Street Fighter I: Fighting Street
Zero Generation:Street Fighter Alpha 1: Warrior's Dreams - Street Fighter Alpha 3 MAX
2nd Generation: Street Fighter II: The World Warrior - Super Street Fighter II: Turbo Revival X: The Grand Master Challenge: High Definition Remix
3rd Generation: Street Fighter II: New Generation - Street Fighter III: 3rd Strike
4th Generation: Street Fighter IV - SUPER Street Fighter IV: 3D Edition
Final Fight:
Saturday Night Slam Masters:
5th Generation?: Your Thoughts
NOTE: The character has to debut in their respective generation, and Final Fight and Saturday Night Slam Masters/Muscle Bomber shares the same Universe as Street Fighter... as well as Captain Commando(but let's not talk about that).