Maintain notes for D's successor? [Was: Re: Why the @ in @safe? & UDAs]

[Dicebot]

"Thread hijacking" achievement unlocked ;)

On topic of such wiki page - it is kind of nice to have but lot 
of potential entries are controversial and need some serious 
discussion (for example, I'd place optional parens there as 
damaging mistake but reasonable people will disagree :P) before 
being documented. It risks being biased to preferences of view 
editors or turn into edit wards :) I don't know what is a good 
way to do this without devoting too much efforts.