Initial impressions: A Dave Filoni introduction that emphasizes making your own stories in a book that has Death Star and Darth Vader stats felt disconnected.
Likes: Stats for common NPCs, ships, equipment and universal talent trees. Usual level of professional art and polish.
Dislikes: No Pelta-class capital ship, no art for the KST-100/ Kasmiri , no write-up on Kaller from the Kanan: The Last Padawan comic. I wanted a full entry on Garel, not a two paragraph write-up. It's frustrating that text on these planets includes nothing more than what we already know from Rebels and the Canon section of Wookieepedia.
I seriously doubt it would shatter future projects if new creatures and locations associated with these locales are introduced. When the DK Visual Dictionary books bring in more interesting off-screen background tidbits than your RPG, there's a problem.