And I think that I might be too weird for the stereotyped-as-average Hufflepuff, but I think just wanting to make friends and fit in seems like something that might qualify me still.
Ex
cuse me?!? *is personally insulted*
(I'm joking). =P But looking at the rest of your post, I think you shouldn't sell yourself short.
The four houses are a bit more than nerve, wit, just, and drive. The colours are a lot more mixed than they appear, so Ravenpuff absolutely works. Furthermore, I am highly doubtful over being "outright excluded" from any house; it's more which one you think fits
you.
Plus, Ravenclaw isn't really about creativity; it's more about curiosity, wanting to explore the unknown, finding out what they don't yet know.
Plus, Gryffindor isn't so much about being brave for the sake of it; it's more being passionate and standing up for what and who they believe in.
Plus, Slytherin isn't so much about latching onto a specific ambition; more about "what do other people think of me" and to a greater extent "how will I be remembered?" or "what legacy do I wish to have?"
Plus, Hufflepuff isn't just about being friends with everyone; they do their best to stick to the safe and reliable and avoid starting needless conflicts.
The houses are practically built to strike a chord with people. The hat isn't going to exclude you from what you connect with! And if somehow it does, I'll be willing to set it on fire -- priceless several hundred year artifact or not, if it's being a jerk it doesn't have the right to sit on eleven-year-olds' heads. =D