Overall I liked the finale. However, I was sad that Shin and Baylan were absent.
I am puzzled that Shin did not join Thrawn on his conquest, and instead sought out the raiders instead. I imagine that this plot will play into the Knights of Ren Story. Sadly, I never cared for them because they never appeared to be anything more than backdrop characters.
Baylans discovery on Peridea, however, sparks my interest. The statue he stood upon looked like the father from the mortis arc and the figure next to him looked like the son. With that in mind, I guess that Baylan is looking for Abeloth and that they will reintroduce her into the canon as the founder of the nightsister clan.