What's missing to make D2 feature complete?

[Martin Nowak via Digitalmars-d]

On Saturday, 20 December 2014 at 19:22:05 UTC, safety0ff wrote:
> On Saturday, 20 December 2014 at 17:40:06 UTC, Martin Nowak 
> wrote:
>> Just wondering what the general sentiment is.
>>
>
> Multiple alias this (DIP66 / #6083.)

It's already in :), at least the DIP just got approved.
Would it really have been a dealbreaker?