What's left to do for a stable D2?

[Don]

Andrei Alexandrescu wrote:
> Eldar Insafutdinov wrote:
>> Jesse Phillips Wrote:
>>
>>> Jason House wrote:
>>>
>>>> Andrei's finishing his last TDPL chapter, Sean is updating 
>>>> std.thread(?), and Walter's been fixing forward reference and CTFE 
>>>> bugs. What's left? 
>>> This page[1] has been getting regular updates, so it should do a good
>>> job answering the question.
>>>
>>> 1. http://www.prowiki.org/wiki4d/wiki.cgi?LanguageDevel#FutureDirections
>>
>>
>> From this list: default struct constructors?
> 
> Walter doesn't want. This will go down as one of the larger language 
> incapabilities.
> 
> Andrei

What's the reason? Does he dislike the concept, or feel it's a 
implementation disaster, or something else?