One other thing is that is was "zero config". While everyone likes the idea of "zero config", in reality there are some things you will want to configure. It drove me up a wall with Parcel where I wanted to do X but couldn't and had to do Y instead because there was no way to configure parcel to make X work, not that X wouldn't work with Parcel, there's just no way to configure anything and you're at the mercy of "good defaults"