So we know that monsters will have disposition which will nicely change their behaviour. However how about making them adapt to time of the year (as well as day/night changes) and introduce to some monsters growth cycle? As for adapting for example orcs would wear furs and pelts in the winter - increasing their cold res. As for growth cycle lizards in the spring would be small, walk on 4 legs and use mostly their mouths for poison attacks, however in winter time they will be fully grown lizard-man fighting with weapons. This would affect also economy, as some crafting materials would be obtainable only in specific time of year making their prices skyrocket in time of their absence. What's your opinion on that? How you'd make fights even more fun and changing?
It would be great to see all humanoid clothes wearin npcs changing clothes depending on the season, plus animals having thicker coats or a different colour depending on the season.
I'd love to see enemies using line of sight, the environment and adapting to what the player is using, when fighting.