Back in the Invasion Cycle, the books and cards really had their storyline coincide. You could even see some of the major events on the cards! Not here, not anymore.
The two characters Sash and Waistcoat were apparently only added so that the book would be long enough. They could easily have been snipped out, with only a few rewrites. If they had to take up that space, why not show the events of the Riptide Project? As I stated previously, the Slivers (which the Riptide Project created, but the Slivers took over the island) should have been included in Legions, and here. They could have removed the "Dumb Adventures of Sash & Waistcoat", who never even appeared in the cards, and add some information on the Slivers. True, maybe it doesn't contribute to the major storyline, but it would be interesting to see.
Also, in this book Karona seems more like someone just trying to find their place...but in the card game she seems more evil, urging all of Dominaria to fight each other for her behalf. Why can't they stick to the CARDS? I mean, that's what it's based on!
Also, supposedly Scourge is the last set to take place on Dominaria. You think they could have wrapped it up better. The ending isn't very good for the final event that we'll see on Dominaria, at least for a while.
Of course, I blame WOTC for this. Come on, Wizards, why can't you fit the storyline with the card game, instead of leaving 90% of the story up the imagination of the authors (which often isn't very good).
Oh, and overall this wasn't that great a book anyway.