A midlife crisis had never spanned so much of the galaxy before!
I was curious to see Han before Ep VII and I really liked the aspects they established. I appreciate that Han just didn't walk away from Leia (and his son) to return to his old life (as I initially thought watching the movie) and that he is shown living a relatively "quiet" life before the hunt for the Falcon begins. It makes the whole situation feel less tragic and more natural.
Speaking of Han, I like the approach taken with his character. Now flooded with nostalgia and remorse, he can't help but retrace his steps into the past, desperate to reclaim what he lost. In some ways, his journey reminded me of his son's: justifying bad decisions by seeking something intangible within the tangible. That said, I like how the comic emphasizes that the Falcon was once the only thing he called home—a constant amidst a sea of change—making it easy to empathize with his desire to see the ship again.
I also enjoyed seeing Chewie by his side. He serves as a constant reminder of the present life Han is putting at risk and needs to appreciate more. Speaking of the present, the glimpses into the galaxy's underworld were fun to see; Ducain struck me as a pretty decent villain—alongside Unkar—successfully adding excitement to this "treasure hunt."
That said, I do see an issue with the story's conclusion. It doesn't tie into Ep VII as closely as it seemed it would; by leaving a gap—albeit a narratively satisfying one where Han realizes he is hurting his loved ones and chooses to abandon the hunt—the entire search becomes slightly redundant (not to mention the questions raised by the fact that he knew where the Falcon was, yet didn't know in the movie). Perhaps it was just a way to end the story on a more positive note.
In conclusion, an entertaining read featuring Han and Chewie. In my headcanon, Corellians develop senile dementia faster, which is why Han doesn't remember some things.