1. Yes you do have to do the online thing (the Keep) to get your decisions transferred. This is because the import utility used in the previous games was broken as hell, and that problem is compounded by the console jump.
The Keep works really well, you can do it on a computer or through the console's browser (I recommend using the console's browser for a better cinematic experience). After you've made all the decisions you can watch a video that retells everything that has happened in your story and export that world state to your game.
2. So far the impact of the decisions made in DA 1 & 2 have been smaller and more personal. Which is arguably a good thing because it means there aren't big moments that are missed on players that haven't played the earlier games, and it allows the game to remain focused on itself.
However, that said the decisions you make in Inquisition itself have a huge impact on the development of the story and where you take it
3. Yes, Inquisition follows the same trend as DA 1 & 2 so you are a new character. However, you will meet and play with many characters from the previous games.
Lastly, I've played half of Origins and all of DA: 2.
For whatever my word is worth I highly,
highly recommend this game.
- The combat is incredibly enjoyable, making the minute-to-minute gameplay fun. They use a blend of the combat in DA: 2 and the combat in DA: 1. You could play the entire game using the tactical system and love it.
- The smaller quests feel like you're contributing to something larger and meaningful, and the larger quests are even better.
- The story and decisions that you have to make are Pineappling intense, and there isn't really any "perfect" solution. It comes down to what you feel is right to do
- And lastly, the companions and characters of the game itself feel and act alive. They're written so well, it's really quite impressive.
UPDATE 11/24:
After 82 hours of gameplay, I have finished my first playthrough.