Assassin's Creed 2020: 8 Improvements Fans Need To See
4. Historical Accuracy
Sure, Assassin's Creed has never been a historical simulation (which is ironic, if you think about it), but they always really felt rooted in history, with each non-fictional target that you kill dying in the same time and place as they did in our world.
Even in games which delved massively into the whole First Civilisation element of the series, every time you killed a Templar, or interacted with a famous, historical figure, it felt natural and cinemataic, which is something that Odyssey somewhat fails on.
The main problem is how you kill Cultists. As, for the most part, when you assassinate important targets (it doesn't matter for the more minor enemies, I'm talking about people like Pausanias, one of the damn kings of Sparta), they are found in the open world, and therefore it never has the same cinematic flair that made previous games feel like you were in that time period, or feel like you're murdering them at the time and place they actually died.
None of this is helped by the inclusion of the mythological creatures, like Medusa, though at least they can be explained away by the use of Esu technology, unlike the other historical discrepancies.