YaandorAll Daily missions are done on ML and it (also) gives rewards you can't use on Silan, I think this is the reason why it is not available there.
1) Daily missions are new to the game so there probably hasn't been much thought as to introducing them on Silan.
YaandorYes, I also do not understand why we keep adding new (and very often unfinished) things while we let the list of bugs grow.
8) There's a lot of pressure from the player base for game expansion and new features. However, if the underlying bugs in the game aren't fixed it becomes very difficult to do either. If the foundation isn't stable, the house is going to fall down.