On technical merit alone, I can't think of a case in which `/* */` is better than `/+ +/`, except maybe for the case where a `/+` or `+/` is needed verbatim. Unless there's something I'm missing, `/+ +/` does indeed seem generally superior.

I don't know what the Phobos stance is on this though. Should we proliferate `/+ +/` opportunistically, crawling towards a full migration, or should be stick to the convention? I think making a decision based on the general trend in the module at hand sounds reasonable, but I fear the vast majority of Phobos modules might be using `/* */`.