This might be a change which we won't be able to back out of if it turns out to be a bad idea, because then we break other classes of programs that depend on this change. See https://forum.dlang.org/post/eepblrtjmqzbtopyl...@forum.dlang.org for an example.
Case in point:
https://msdn.microsoft.com/ru-ru/office/mt762842%28v=vs.90%29?f=255&MSPPError=-2147217396
