Though we may all be typed into one personality type or another, we are much more complex than some personality type description. Not saying I don't see any merit in the MBTI system or any other personality system out there, but think about it, there is still SO much about the human brain that we have no understanding of. Emotion, experience, outlook, everything comes together to make each one of us unique and positively radiant in the eyes of anyone else that just pauses to take notice. I wholly believe this, and wanted to tell you my perspective as it relates to your feeling dissatisfied about your type. We can be given a type and basis for understanding ourselves and how we may process information, but what we do with that information and how can further develop ourselves into the people we know we want and can be, is where the real magic lies.
As you can see in my bio, I too, am an ENFP. The more I read about our shared type, the more I become frustrated for the very reasons you bring up. I know many perceptions are merely stereotypes, but having an image of some bouncing ball of doofus is nothing to be proud of, particularly when you see yourself as much deeper and thoughtful than that sad image. Listen, I used to be very hard on myself growing up as I never fit into the typical qualifiers of what classifies a student as "smart" in high school. I was no math wiz, I had a hard time remembering dates and names in history, and to this day, I still have a hard time with spelling as my brain often thinks words should be spelt the way they sound and not follow some organizing structure of rules no matter how logical. However, I found architecture and have found my secret talent that just so happens to allow my ENFP personality type to shine where some other personality types may struggle. Our scattered thought process and ability to make connections between seemingly disparate metaphors means that I am very adept at pulling from my personal background in the arts, design, and music, and synthesize those influences to solve spatial and design issues that I often come across in a building project, and my solutions are always highly unique and original. I never brag of my abilities and prefer to let my work do the talking.
So even though our type is often pointed in the direction of social work or other career paths where we can use our abilities to easily connect to people, those very same abilities and the ones I mentioned above, can also be used in other applications, and particularly when called upon to come up with a creative solution to a problem, ENFPs are pretty bad ass
So find your secret weapon, and go out and amaze the pants off of the people you meet with our type's uncanny ability to see the invisible, to see the not yet imagined, and to see a life that is far greater than anyone else can ever imagine.