I can identify with a stormtrooper who breaks loose from his oppression and join the other side. The girl has a royal destiny, but Finn is actually working his way up in the world and he's bumbling because he is stretching his limits.
(I get tired of so many stores where the lead characters have some "special" family origin that is so clear to their situations and this erases any discussion of what is it you have to do to become "special" as a member of the mass.)
That's a very interesting perspective. Personally I thought Finn was the most "normal" character in that film (meaning the one most like us). He's just a child soldier that not only found a way out of it but he worked his way to the rebellion, with no "destiny" or the Force.
IMO he doesn't have to be rich like Lando or powerful like Windu. He just has to be cool and portrayed positively, and I think he is. If he was like Jar Jar then yes, I'd complain.
Either way, we went from tech diversity to Star Wars, so maybe we should stop here :-)
Mace Windu was a completely bogus effort to put Samuel L Jackson in front of Black ticket-buyers. It wasn't even a good role for the incredible (but range-limited) performer Jackson is.
Mace Windu? Master of the Jedi high council.
Lando Calrissian? Permed out badass who is in charge of Cloud City
Vader? The original voice actor was black but does anything else need to be said?
Can Finn really compare to any of these? Is he a hero I can personally identify with? No way.