The first 'Half-Life' movie treatment pitched to us climaxed with a tearful reunion between enslaved Vortigaunts and their Vortiwives and children. The last one I saw had Black Mesa invaded by a cavalry unit, just so as to feature a scene of bullsquids tearing into armored horses.
The trade-off between speed and image quality is a key constraint of first-person action games, and the job of developing a workable engine involves constantly optimizing both elements. Gamers dream of the day they'll be able to haul their arsenals through three-dimensional environments of photographic clarity, playing 'Myst' with a meat ax.
'Dragon Age' needs to have big story moments. It is a game about character first, and the party is an absolutely central part of that. I want to keep pursuing interactivity with the world: taking crowds to the next level or having things catch fire because you indiscriminately cast a fireball into a wheat field.
There's a misunderstanding that I've always tried to address straight on when this question comes up, which is that a 'Half-Life' story can somehow exist outside of a game. It can't. The story is created through the process of trying to figure out how to best use the features of the engine within the interesting set of constraints it poses.
A game like 'Myst' may be a gorgeous slide show that preserves its beauty at the expense of speed. A game like 'Doom' sacrifices almost everything for action. But the eye soon adjusts: the degree of detail more than adequately conveys infinite claustrophobic labyrinths populated by howling monsters.
