Allow struct constructors with all parameters optional

[IchorDev]

On Tuesday, 27 August 2024 at 08:48:19 UTC, Ogi wrote:
> D disallows parameterless constructors for structs, and there 
> are good reasons for this. But constructors with all parameters 
> optional are prohibited too. This restriction doesn’t make much 
> sense

I can’t remember exactly what the reasons for that were, but I 
thought those reasons applied equally to any constructors that 
*could* be called with 0 parameters? Could you also elaborate 
about how named parameters affect this situation?