Jon, you helped us on some of the more...subjective...sites handle some of the most challenging interpersonal issues in our communities with patient, calm and measured dialogue, helping us see the best in others where we maybe only saw the overt trolling, as well as supporting us in rapidly removing those that did turn out to be malicious and cruel, or downright obscene.
You helped us grow, as sites , as teams and as people.
With you gone, SE/SO is almost out of reasons for me to remain :-(
Your next employer is a very lucky company! I hope your new role is as much fun as your last one!