The biggest mistake and question mark ever done by Hara: stretching the Zhao conquest for an additional 200 chapters AFTER Gyou has fallen.
The optimal route would have been:
- Gyou conquest goes as it was in canon
- Three kingdoms arc goes as canon
- Kanki kills Kochou and gets killed by SBS in the SAME arc
- Qin suffers a setback then shifts straight to Han conquest
- Han is conquered, we go back to Zhao for a final assault