I finished all the eight Chapter 1, the two last ones (for me Olberic and Tressa) were very easy, because the suggested level of 12 didn't increase after the sixth Chapter 1. I immediately tried to do Therion Chapter 2 and... the boss destroyed me. But I didn't see it as a negative aspect, because it led me better understand how to improve my characters. So I reached other Chapter 2 cities, I stole a 3% object and a 8% object, I found two secondary jobs and I decided to keep my party of Cyrus - Ophelia - Therion ( + Apotechary secondary job) - Ha'anit at the moment And, when I was able ten minutes ago to defeat at the second attempt the boss in Ophelia's Chapter 2, I admit it was a very rewarding moment which only a similar JRPG can give. However maybe I'm appreciating this aspect because this week I had a lot of more free time than usual, and during the rest of the year I would have appreciated less the fact that I had to grind/improve the equipment for 2 hours.
About the battle system, I can confirm that I love it, it's so fun to play.