Typesafe variadics in any position

[Vladimir Panteleev]

On Tuesday, 26 February 2013 at 20:29:51 UTC, Steven 
Schveighoffer wrote:
> Having a conversation about the design of the new std.process, 
> I lamented that typesafe variadics must be the last element in 
> the list of parameters.

Could the idea be expanded into allowing optional arguments in 
front of non-optional ones, when it is not ambiguous to do so?