Day and night I could take or leave. Weather I would definitely like, even if it were mostly aesthetic, as I find it to provide a lot of atmosphere in other games.
One thing I'd like, knowing full well there won't be day/night cycles, is for the lighting on the world map to be a little more uniform. In DOS1, the starting area was lit as if it were morning, with the sun--and shadows--shifting as you moved further north on the map. It was great for creating a sense of the day passing the first time you explored, but if you ever visited past areas--or even scrolled back over to other areas of the map--the lighting would shift backwards to looking like morning. Also, if you scrolled outside of Cyseal, there was kind of an awkward shift between the sunny inside of the city and the rainy exterior countryside. It was a little immersion breaking for me. A minor detail, really, but one I always noticed and one I'd prefer reconsidered.
