With so much to wrap up and link to the previous trilogy weighting on the tension crescendo of the narrative, I'd say I was cautiously optimistic about this book.
But while, yes, it is a heavy book to fit all the necessary points, I feel that the execution was perfectly balanced between tension, emotion, adventure, and the unique humor of the Chiss.
This is an incredibly satisfactory conclusion for the prequel story of Thrawn, and leaves enough open threads for the audience to hope that future projects come back to tie them. (and they should better bring back Timothy Zahn for that, either it being on upcoming novels or the apparent inclusion of Thrawn in the Ahsoka show)