> Just because Go doesn't offer you supervision trees doesn't mean they wouldn't be helpful. In fact I'll be surprised if there isn't a decent library for them in a couple of years.

Supervision trees only work because the worker processes they supervise are supervisable. You can't just bolt them on. If you are building things in threads (ie with shared state) then 'supervision' consists of closing them ALL on any error in ONE and restarting. Not so useful