There's no true save importing for DA:I anyways. Or at least that's the impression I had.
That's true. DAI only grabs whatever entries you have made to the Dragon Age Keep and you do not have to play any of the games to tamper with the DA Keep as you please.
One just needs to make sure to update the Keep before starting a new game. DAI will not accept "on-the-fly" changes to the Keep. It imports the world state that is set at the Keep upon starting a new game only and that's it.
Still, after finishing DAO and keeping my character's history up to date on the Keep, I personally found a lot of motivation in continuing the Keep tapestry while slogging through Dragon Age 2. Like a game outside the game.
It was quite fun to update the choices and decisions after a couple of play sessions (best done when fresh on one's mind).
I'm not even sure if I could have finished DA2 without that additional motivation and in hindsight, i.e. now that I have started DAI, I'm very glad I played DA2 and know who's who and what's what.
Previously, when I played the DAI free trial, before I had finished DA2, I was thoroughly confused about the Seeker (Cassandra), why Leliana was there and who was this Varric and so on… it all made TONS more sense after playing DA2.
I'm sure there are excellent plot summary videos on YouTube for DA2 by now though so if anyone really can't stand the game at all but still wants to play DAI, then I'd recommend to hit YT.
The game isn't actually
that terrible though… just pretty mediocre. It gets real fun towards the end of each Act and I actually enjoyed the end game quite a bit and ended up playing through both endings (mage/templar).
The problem is the utterly boring parts leading up to these conclusions with the really lame recycling of the day/night maps each Act. I love exploring in RPGs and this game was terrible with its very limited set of locations.
It's definitely mostly the story that keeps you going and some of the characters' back stories (Merrill's was real good).
Other than that: Meh. It's best to just kind of plow through it and just do the main plot and the character stories. The vast majority of the side quests are completely forgettable or even outright retarded.