mixins as inline functions

[Walter Bright]

Serg Kovrov wrote:
> First time I looked at mixins in D reference, I thought that it could be 
> used as inline function. Like a big C macro. But better =)
> 
> It has its own scope, it has access to parent scope, everything seems 
> fit. Except that in mixins it is not possible to use assign operations. 
> Could this restriction be removed in future? Is there any plans for 
> mixins evolution?

Why not just use inline functions?