I've never seen her be as cool as (say) Edward Wong Hau Pepelu Tivrusky IV or Samantha Carter
Lies! I love Sam muchly, but in an engineering gladiator match, all my money is on Agatha, who builds minions in her sleep and once rewired the engine of a stalled out plane before it had time to hit the ground. Agatha also has the advantage of being much more consistently written than Sam, and having one of her writers actually be a woman.
I think Ed is entertaining, but she's not a very rounded character.