Bumping because I think you should add Lauda's name to your list, as she was an upstanding member of the community and permanently left the forum a few days ago, erasing all avenues of coming back. For the legacy thread you can use
Goodbye, world!.
Did Lauda in fact erase all avenues of coming back? I haven't read through that entire "Goodbye World" thread, but perhaps I should. There have been a lot of members who've said they were leaving the forum for good, and then they don't.
One of the ones who did follow through (so far) is
Spoetnik, and another is
mixan. And didn't
MPOE-PR have a rather notorious record on the forum before he got banned? That was a long time ago, so a lot of people these days might not even remember him.
I don't know if any of them belong in the so-called Hall of Fame, but they're all gone now and they were all popular members (except maybe for mixan) when they were active.