D for embedded system

[maarten van damme]

Why is so much built in to druntime? creating classes, AA's,....
Is it normal? does c++ do the same thing?

Why wasn't opted for making opIndex overloadable with other objects so
AA's could be moved out of druntime and in phobos?

I have no experience with language design but wouldn't it be great if
druntime was more modular to make porting (and stripping) of features
for for example embedded platforms more easy?

And is somewhere documented which functions need to be implemented in druntime?