I do think Carter got robbed out of taking command of SG-1. Amanda said she was disappointed about that decision. The reason could have been the timing of her pregnancy or something else.
Anyway, out of curiosity (and moving a little away from the thread topic), if Carter was put in charge of SG-1 and there was no Mitchell, I wonder who would be a good fourth person to join Carter (leader), Jackson, and Teal'c. I love Carter, but she's usually serious and not too exciting. So the fourth person should be somewhat colorful, and maybe a warrior type. I was first thinking of a military person, but it's not easy to have a fun, entertaining military subordinate. I don't know - maybe a woman who's a cross between Teyla and Vala.
Someone a lot like Lt. Ford per-say? Without the crazy wraith enzyme high that is.