[Spoilers All]

I just completed my first ever run through of DA:I, no DLC yet. I used the Dragon Age Keep to build my world but was only vaguely familiar with what I was selecting at the time. As a result a good portion of my play through didn't make a lot of sense to me/felt like I was missing some important information. Making me feel a bit disconnected from the story.

For the above reasons, I'm considering a run through from DA:O and re-run of DA:I. I played DA:O when it came out but never finished it and played only a few hours of DA2 when it released.

I know generally what happened in both DA:O and DA2 but I want a deeper grasp of the lore and some of the major events.

Would it make sense for just a run through of DA2 and then re do DA:I?

Should I do Trespasser DLC before I start my DA:2 run?

I really loved the characters in DA:I, probably my biggest disappointment was that Hawke wasn't truly my own. I also ended up with Vivienne as the Divine somehow, that was confusing.

Any advice would be appreciated.

EDIT: Apologies for the lack of title. I am bad at Reddit.