She has been written as a very humble person. She also is a genius, and as a teenager created a suit that enabled her to do numerous things, like fly, be super strong and have sonic powers. Karen is capable of so much, on a technical level, that writers fail to take advantage of. I like that Bumblebee is also very 'grounded', and often has been a person first and a hero second, not that she won't step up to plate whenever needed.
I guess I see a ton of potential there for Karen. Potential that writers often overlook. I'd love to see her embrace a position as a real ass kicker and a scientific/ technological authority in the DCU.