having at least 1 row of 4 will give you the best options for future games…
King of Fighters i think always uses 4, and BlazBlue is going to use 4.
i think those are pretty much the major fighting games currently slated for this year. i like having 8 buttons personally, just due to the versatility of being able to use a combination of layouts.
the SF4 TE sticks use a vewlix layout i think. the far right buttons are staggered a bit but strait across, 2 closest to the joystick are offset down a bit. i really like that particular layout. It’s really just preference though, find a layout you like and go with that.