For the most part, when I initially begin an RPG that I
haven't been waiting for like I have for Dragon Age, I go into playing the game without any preconceived notions of how I'm going to play my character, and I wait for the game world to become my own, so that I can then roleplay in whatever way I wish. I largely tend to play characters that fall within the chaotic-good to chaotic-neutral standing, which is where I believe I fall personally on the moral scale. (Unless it's a Star Wars Rpg, I can't resist the lure of the Dark Side. =P)
However, the thing I like so much about Dragon Age, both in David Gaider's books, and in the way I've used my own insights to think about the game world, is that things aren't always what they seem, even
if you make predictions that could've been, (or are,) entirely accurate. Ferelden doesn't seem very "Tolkien-esque" to me, aside from the appearance of Elves and Dwarves, which have largely made a prominent appearance across the entirety of the High-Fantasy spectrum. Therefore, the change in overall tone is going to effect the way I roleplay my characters with a fair amount of strength. There are probably three major points that are going to govern whatever character I can create in the Dragon Age universe, and I think that those are:
1.) Repetitively, this game has been classified by terms such as, "dark," "gritty," and "heroic." and I find it impressive that Bioware has recognized the fact that heroism isn't always the knight in shining armor, simply because, in reality, it's rarely possible. In the words of Heath Ledger's Joker, "(The people who do "good",) are only as good as the world allows them to be." You can still be a hero, but the choices you will have to make will not always be so accomodating to your wishes, which in turn, will shape your character even further. How the world's darkness is perceived by my character is going to be (most likely,) the greatest leveling factor in determining their alignment. How
long can you hold onto the good in yourself.
Can you save the world, even as yours is falling apart?
2.) The story I create
for my characters is almost nearly as important as the world the story takes place
in. This is another reason I already like Dragon Age so much, because in creating your own story beforehand, in a game that's meant to tell your story already, the experience is just that much more enriched. I have to make decisions about the world, almost as if I'm there, which adds a whole new level of depth. My character's story is told by the game,
through me. This means that no matter what character I create, I'll always be in for a bit of a surprise.
3.)Origin. Of
all the features of which I'm currently aware in Dragon Age, I think that Origin is a brilliant addition that outshines many other of the games great features, let alone other games. Background means
everything. Beliefs, hopes, dreams, hatreds, prejudices, ect. could all be erased, if only someone was born in a different place under opposite circumstances, even if (internally) you are still the same soul. This allows me to remain in my own shoes even if they're a different brand. (So to speak.

)
So. We have tone, story, and background. This opens up fairly limitless amounts of Roleplay doors for me. (
Especially me, who plays video-games over and over and over..) I'm really into the lore behind the story, I like the more mature, insightful approach at the setting, and it's sure to effect my characters as much as it'll effect me.