I'm glad you can't get rid of Enders, because I for one LOVE nightvision. It's half the reason I'm still playing today. I know the night is supposed to add to the feel of the game and to the "realism", but for me, it doesn't. For one thing, for some reason whenever I log in it is ALWAYS night. "Realistically", a person in this world would simply sleep at night and only work/go out during the day (Unless they're hunters or something, which I"m not). But because I always manage to log on at night, I'm stuck trying to farm in the pitch black...wtf? And in 8 hours, when the sun finally comes back up, I will have to log off. So, Enders works great for me.
I suppose you could try to implement a "real" day/night cycle....but with all the different people playing from different timezones, I don't see how that would work. (And with my luck, I'd end up STILL always logging in at night).
Weather might be a neat idea, though I'm not sure what actual effect it would have on the game outside of atmosphere and lag.
Anyway, as one of those players who isn't as interested in the fighting aspects of the game, I, for one, am glad Enders exists to help me stay safe from animals so I can worry about the true dangers of HnH: the people