I enjoyed the game very much. I loved the exploration parts and finding new synergies. As other have mentioned the map is a problem, because it is not obvious how stuff is connected. This could be solved by an permanent overlay of all routes, maybe color coded for still not visited parts.

SPOILER: The monster catcher guy adds a huge amount of new attacks which is overwelming and kind of ruins everything build up until then, because there is always a caught monster with a better attack than your own guys. I couldn't find a viable strategy to beat the end boss with my own guys, and had to use a caught monster with better attack, which was kind of annoying.

But anyways, solid game, which entertained me for several days.