If you could make any changes to D, what would they look like?

[Kagamin]

Like many people here I tried to design my own language, but I 
noticed that I can't get (logically) puristic concepts into an 
adequate form. I grew suspicious it's because the problem domain 
itself is impure, so puristic concepts can't be adequate, and an 
adequate language should elegantly incorporate impurity instead 
of evading it at all wasteful costs. I also take this approach in 
program design, somehow a line is easy to see that the component 
shouldn't be more pure than this.