There's a lot in there that, in my experience, isn't true. For example, the hierarchy of characters. It's true to an extent that the face characters can be cliquish (the princesses especially have something of a reputation for letting it go to their heads), but beyond that, I didn't see a hierarchy of fur.
Part of the cliquishness is simply circumstances. The face and fur characters are often segregated, so they don't work together, so they don't interact in their off-time. (I can think of very few times when I shared a break room with a face character.) Another note on face: If you do face, you also do fur. Also, fwiw, the face performers I met were all very nice. Even Cruella (sorry to spoil her!).
In fur terms, the more desireable and therefore "cooler" characters are the ones that are either rare (like Darkwing Duck) or known to be comfortable (like Suzy & Perla or Robin Hood). The Fab 5, as claimed, aren't really more prestigious than any other character, partially because they are EVERYWHERE. Also, since everything is done by height, everyone has an "index" character, so there really are very few performers who don't get to do the popular characters. (An index character is a popular character that also indicates height. For example, Mickey height or Goofy height. I'm Pooh/Munk height. It gets to the point where one refers to people not in feet but in characters. "Brown hair, blue eyes, Pluto height...")
Performers often really enjoy doing the less popular characters because not as many guests know who they are, and so they don't get a long line, which means they get to play more. The Country Bears and Gideon are good examples of that. (Nobody knows who the heck Gideon is, so he often gets to spend his whole set wandering around and messing with guests, which he loves.)
Oh yeah, visibility is a *huge* factor in terms of costume desireability. Piglet and Miss Piggy are possibly the worst for visibility.