After nearly 100 hrs of playing, I would like to suggest the following improvements:
1. In the Mission Res Publica, allow the player to save Syneros if the legatus or Syneros is equipped with the tactic Mithridate.
2. Allow the player to skip the enemy's turn during combats.
3. In the Siege of Chalkedon, allow the player to block the escape route of Mithridate Megas and to acquire his Crown by knocking him out.
4. Despite being captured by the legatus, the head of VIXI, Felix Harianus, does not testify during the trial of Lurco. This is clearly a defect in the plot.
As for future DLCs, I think the following ideas should be taken into consideration:
1. The Expedition of Belisarius. The Byzantine general should be offered the chance to restore the Western Empire, or even the entire Roman Empire. A civil war between Belisarius and Justinian could be epic! The player could encounter the Visigoths, the Ostrogoths, the Vandals, the Persians, the Berbers, the Aksumites, and of course the Byzantines.
2. The Adventures of Asterix (Asterix and Obelix are already in the game)
3. The Adventures of Pullo & Vonerus (They are already in the game)
4. Prequel of the Main Game (featuring Sulla, Lucullus, and the father of Legatus)