I commented on another thread how much I would love a day/night cycle. Such a missed opportunity.
I also wondered whether an Elder Scrolls style wait system would be well suited, giving the player some control over conditions. For example, waiting to attack at night to facilitate stealth and inhibit non-dark vision races, or waiting for the mist to pass to better search an area.
This could also be tied to the rest system, which is completely flawed at the moment.
The more I think about and play this game, the more I realise how un-immersive it is in so many respects, despite having so much potential.