I am not including guys like Scotty, who were in the league for very long periods of time but then left a while ago. I am focusing on recent history.
Honorable mention to @McWolf since he inspired this list, despite his most recent comeback
@Stoffiday
I didn't really know him, but he obviously was loved by most in the community. Beaviss just said he misses him, and he hasn't logged on in 6 months. For a first gen, he clearly had a big impact on the site.
@Spade18 While a return is possible, for now it looks like it's over. Being removed from the NY GM job due to inactivity, losing his job at the recruitment crew and not earning any TPE for Shane Mars. He was well respected in the community and we hope to see him back.
@Eudaldkp He was the GM of the Storm and was the S65 first overall pick. He recently stepped down and hasn't updated in nearly two months. It was a shame to see him go, but his decline in activity was slowly becoming more obvious as time went on. It wasn't out of nowhere. We still hope he returns.
I'm sure there are a ton of guys I missed. These are just the three that I can think of off the top of my head