This is a great question... I've come to really like Yarn because of its caching. Much like HHVM was great for a time though there is no point in using "the fe

This is a great question... I've come to really like Yarn because of its caching. Much like HHVM was great for a time though there is no point in using "the feature rich alternative" when the mainstream system finally adopts all those features that pulled you away. Aside from syntax is there any reason to keep using Yarn?