This post contains major spoilers for the entirety of Dragon Age II. If you have even a slight interest in playing the game, do that before reading.
One of the chief complaints that I’ve heard about Dragon Age II is the relative lack of choice compared to the first game. In Dragon Age: Origins, you could change the fate of each little society that you visited: You could bring peace to the elves and werewolves or wipe out one side, you could save the mages or let them all die, and you could choose a king for the dwarves who would either modernize the people or steadfastly cling to tradition. (Your choices at Redcliffe aren’t as grand since the Arl sides with you no matter what happens.). In each instance, the choices that you made affected the world at large; your Grey Warden was a force of change that irrecoverably altered the lives of all he/she came into contact with.
Contrast that with the Champion of Kirkwall, who is unable to change any major plot point in the entire game: