I've been thinking about this and I'm really curious to know...
Sure it had a good storyline and the combat was sound, and it was generally a good game, I'm not knocking it, but why do people talk like it was out of this world? Personally I found the places you could visit very limited, Denerim was small and mostly empty, and the worst part about it was that you traveled via a red line on the map quite literally, interupted only by a single combat sequence from point A to point B. Surely it had a severe lack of exploration and what there was small in scale and very linear??
Character creaton. And no i dont mean the looks of your avatar. Picking your origin and then playing the prolog - made the game etrance very interesting and engaging. Most other RPGS trow you in combat after some long ass intro - that you kinda half asleep you skip couse you dont care just yet.
Deep interesting story - that made you feel like you accomplish something big. You had clearly definded arch enemy but no clue how to defeat. Each step of the way and each quest helped you undurstand more about the world , the enemy, yourself ( Gray Wardens) and made you crave even more for the story.
Extraordinary characters whit complex personalitis ( well almost all of them ). Interesting to intereact whit and feel enganged in what happens to them.
Great lore. I have read almost if not all the scrolls, books and fillers i could find in the game and was never disapointed.
Hidden quests, locations , enemys. THat made exloring each corner, nook and crany rewarding and interesting.
Interesting and very varied locations. You can be strolling in a idilic vilage ( Stone Prisoner ) and in the next step you are in the deep roads and in the next step you are on top of the king's keep.
Great RPG elemetns. Deep interesting skills, perks, combos. Diversity and varaity.
Superb combat.
Great ability to customize how your companions fight - TACTICS FFS GIVE THEM BACK.
Awesome min/max gear to be foght over for or searched in a well hidden cave behind a boss behind a freaking fire wall behind a cliff.
And much more. Point is i have played DA:O five times already and still can probably jump on it and replay it again.
Oh almost forgot something majore - epic mods something we may not have in DA:I.
EDIT.
That as well 