Harbinger's DFA: Sounds good (Fan of the Dragonfire Adept, myself), but I have no clue what you're talking about with the marshal stuff.
Marshals have access to a number of Auras (one minor at first level, one major at second level, two minor at third, etc), which are befitting of the direction I'm taking this character. The problem is that the auras are a) about the only thing they get and b) very, very limited (both in number known and number activatable), so I was hoping that you would allow taking the collection of Boost [Attribute] minor auras as one Minor Aura Known while leaving them as counting as seperate minor auras for the purposes of Minor Aura Activateable. Basically, the first bit is a boost while the second bit is ensuring the boost doesn't benefit too widely; effectively making it more versatile, but not more powerful, you could say.
Kassire's HD-HM-HH: 40 damage? No.
So a total character overhaul? I guess I'll keep Jack Bull around until he can be used.
Bear in mind that removing that Bastard Sword -> Greatsword change (or just having the character use a Bastard Sword as personal preference) will drop that somewhat, and the 40 damage strike takes a move action per use (thus meaning it can't easily be used while flying or at all more than once in a full attack, and can't get the benefit of Charging).
Wyrmling: Pros: Is dragon. Is cool. Rawr.
Cons: Hinders character development/interaction. Raises lots of questions.
Crunch-wise it seems sort of OK, but the fluff... the coherency of the fluff I would have to write would go from a sheet of fabric to a cotton ball, metaphorically speaking.
Yeah, the White is probably a bad choice, given the whole "we're dumb animalistic brutes (comparatively)!" thing. Fortunately,
there are other, better, choices. (Also, given there's a DFA in the party, well, obvious fluff is obvious).