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D also has nice opt-in reflection as an advantage over C++ (though there are C++ tools to make up for it, to an extent).

The reflection is IMO the killer individual feature (well, hand-in-hand with the codegen to actually use it). The rest is just the benefit of 1000 small things that all add up to a greater whole.

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Yeah, automatic static reflection for serialization of standard-layout structs in C++ would certainly be nice. You can achieve something like that with std::tuple, but it's certainly not comparable to first-class serialization.

PS, I used to enjoy your posts on SDN, before the site owner threw a fit. :-)

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