First and foremost, I trust Chris Miller and Philip Lord.
After all, they have made a habit of announcing projects that sound absolutely terrible, then making movies out of them that are delightful. There is no reasonable way I should love 21 Jump Street, 22 Jump Street, or The LEGO Movie, but sure enough… I do. And the lesson I've taken from that run (as well as their work on plenty of other projects like Clone High and The Last Man On Earth) is that I trust Miller and Lord.
So while there's a part of me that winces each and every time someone mentions a young Han Solo movie as part of the Star Wars Stories series, all I have to do is think about Lawrence Kasdan and his son writing it and Miller and Lord directing, and I relax.