This specific version addresses long-standing community complaints regarding the endgame "slog" and AI passivity.
The v1.0.10 update introduces several high-level functions that change how a campaign concludes: Grand Unification:
You can now customize specific character traits for original officers, allowing for more specialized custom units. KOEI TECMO AMERICA Strategic Guide: Managing Your Kingdom
With the new invasion mechanics, it is vital to build relations or prepare defenses in the border regions (like those near the Qiang or Nanman) before they trigger a "Grand Invasion".