@Amigajay: Very nice observation, thanx! I'm basically torn between adding those tree shadows (or not) cause it will then severely limit current ability to place trees in a variety of ground formations. But I will definitely consider this
@Gzegzolka: Well, that would be awesome! Some palette related stuff, like darkness or lightning effects e.t.c. we can do easily but I'm unsure if we could add an extra layer like snow or rain given the fact that there's not a huge amount of bandwidth left with current sprites and bobs. Still I wouldn't rule this out completely. I think Erik could surely spread some further light into this matter.