I'll do one playthrough as a mage and another as a rogue, since both classes in DA:O and DA2 were pretty fun. I found the combat for Warriors to be a bit slow in both games, especially because the combat in DA doesn't have the pace and feel of an action RPG (like Dragon's Dogma).
I noticed the origin stories are a little similar to DA:O's (for humans you're the youngest child of a noble family, unless you're a mage in which case you were sent to the Circle, or you're a member of the Dalish, etc.), but that's not a knock against it since it's preferable to the single character / one background you had with Hawke.