That would have been great. Especially during the Sayian Saga. Imagine her going up against Vegeta, and he has the upper hand and starts getting all arrogant because he thinks he's just fighting a weak woman, but the she sneezes and the tables turn. He can't predict what she's going to do next, and neither can her team mates. She might not be the most powerful, but she's the most dangerous.
Way more useful than Yamcha anyway.