I can understand people not being thrilled by the idea of a silent protagonist, but that's what the Gameinformer article stressed. I appreciate people's input, but I think we should stick close to the information we have rather than move against it. So, for example, there is no mention of anyone else as silent, so it's safe to say that the regular South Park characters do speak. Also, while Van Buren would have been a terrific game, we're not building on current ideas when we try to insert old ideas.
Anyway, another idea I had was about classes. The article stressed real world objects as apart of the character's equipment as well as something akin to a cross between LARPing and actual fighting for encounters. Based off of this, I had an idea about how the standard classes (thief, magic user, fighter, cleric) could be those classes as well as being somewhat real world-esque.
My idea is that characters would not use fantastical abilities per-se, but would re-purpose abilities from real-life to fit their class. For example, the thief wouldn't use lockpicks, but a screwdriver to either unlock a door (like you can do with a lot of door that are inside houses), unscrew the lock from the door, or just jam it in and force the lock open (:oP I did all of these things when I was a kid, although I used a bottle opener for forcing a lock). The other classes would follow suit, so the mage would use firecrackers and explosive pellets (think "Happo-Fire Burst" from Ranma ½), the cleric would use neosporin (lol, I'm extremely open to suggestions on this class), and the fighter would use football maneuvers to block incoming hits. There can even be class trainers specific to these types of ideas, e.g. the fighter would train with a football coach (I was going to say Scott Tenorman's dad since he's supposed to be a former Denver Bronco, but Cartman turned him into chili so it'd have to be someone else) and the magic-user would take chemistry classes to make bigger explosions.
While not as hilarious as my previous idea, I think this one has definite potential for role-playing.