Why can't I assign a mixin to an alias?

[Dechcaudron via Digitalmars-d-learn]

On Saturday, 11 June 2016 at 01:53:10 UTC, David Nadlinger wrote:
> This might be a gratuitous grammar restriction. There are a few 
> of those surrounding alias "targets". A template that simply 
> returns its parameter might work, though, such as 
> std.meta.Alias (alias foo = Alias!(mixin(…));).

It seems to be that it would be a good idea to file this in as a 
suggested change/fix. Do I have support?