D's greatest mistakes

[Don]

Jack wrote:
> The post "C#'s greatest mistakes" prompts/begs this post. Have at it, 
> pick up the ball and run with it, don't be shy. I expect Walter and 
> Andrei to answer (if Walter and Andrei so dare!) after others' posts have 
> stopped or stagnated into that cesspool of threaded discussion that is 
> "the subthread" or "tangential thread" (which surely needs a rock 
> anthem). 

D has been far too ambitious, given the available resources.