Allocating Heap/GC Storage upon Default Construction of RC Containers

[Nordlöw via Digitalmars-d-learn]

Is there any way to make a default constructor of a struct 
container allocate/initialize an internal pointer?

I need this in a container with RC behaviour similar to
struct Container
{
    this()    // this is currently forbidden:
    {
        _rcStore = emplace(cast(RCStore*)malloc(RCStore.size), 
null, 0);
    }

private:
    static struct RCStore
    {
        T* store;
        size_t refCount;
    }
    RCStore* _rcStore;
}

If I can't modify default construction in containers such as 
`Container` it is gonna behave in the same confusing way as empty 
AA's do for (novel) D developers. Namely that the assignment of 
uninitialized AA's has copy semantics and non-empty AA's have 
reference semantics.

I believe Andralex has spoken about this being a problem that 
should be fixed if possible.