I had a great time reading volume 3. And it looks like I will have great time reading volume 4 too after doing about 100+ pages. What's so great? Character development and fleshing. Milzar is a pretty interesting guy even though I still don't like him, we see more of Vliar and Magaret as well. Alexis, and Marrine. There's even a side story about their romance. How Theo turned the lord of a castle was decent too. And really understand more what the factions are about. The people who were missing in action in volume 3 were Priscilla and Aishela since they didn't participate in the expedition.
And then, Theo and Siluca did it in volume 4!