Well, about the exp per monster kill... I don't know ... it would mean that someone high level will get the same exp regardless of killing high level monsters to low level monsters, meaning easy leveling by just killing low level monsters

Anyway, CS's look good, but, maybe expand the personality a little.
He has a somewhat cocky bravado, but what is he truly? Shy? Sneaky? Happy-go-lucky?
Doesn't have to be too much, just a little bit more.
This applies to both lightbox and hailfire
It's all good, just the personality is lacking on both. Not enough insight into the character.
All I get from hailfire is his competitive with his brother, but what else?

Edit:
At uni at the moment and no time to do a post in the IC, will do that when I get home