What are the worst parts of D?

[Walter Bright via Digitalmars-d]

On 10/9/2014 7:15 AM, Dicebot wrote:
> That can possibly be done though it will take some efforts to formalize issues
> from the casual chat rants. More important issue is - what will happen next? I
> am pretty sure many of those easy wins are not easy at all in a sense that
> breaking changes are needed.

That's why I'd like to know what Don has in mind.