GHM isn't a big threat to any of the Qin 6 at the moment but he has been improving each arc and looks like Hara has big plans for him in the future. i doubt he's gonna reach/surpass the likes of Riboku in strategy but it looks like he has the complete trust of his king, so when the time comes he's gonna be able to use all of the resources in Wei and he also has Gaimou and RBH under him. I Also expect more top tier generals to be introduced whether they are new talents or vassals to the former fire dragons.
I Don't think any state other than Chu will make as much trouble for Qin as the Zhao have but they will all have enough men and generals to be a challenge.
I Don't think any state other than Chu will make as much trouble for Qin as the Zhao have but they will all have enough men and generals to be a challenge.