I have some others that I made or acquired, usually being industrious and going outside the usual sources (to get that Lipscomb show, the dude came and met me at work at the funeral home--that probably creeped him the hell out to be trading Features bootleg CD's in a meeting room where people made burial arrangements). I was always too lazy (and probably a little too snobby) to distribute what I had. I see right off the bat that you need the Thunder 94 bootleg from '98, THE definitive Sergio-era Features show. That Rocketown Show that no one is supposed to have pales in comparison.
Several of mine were never converted past minidisc, so that also adds to the problem of circulating them. Coming to mind off hand, I have--
-an Atlanta show from the Earl in probably 04 that no one else recorded.
-The 328 show from 10/01 in which Matt broke the strings on every guitar he touched that night, finally just clapping his hands along to 33 1/3 (low quality, mini-disc only right now)
-The Lightning 100 Radio Show from summer 2005 that is un-listenable
-The February 2002 show from 12th & Porter that brianeno2 said was the best show ever--the first big show after the messageboard got rolling, I think
-January 29, 2000--the debut of Dark Room and the second time they played See You Through
-The Lightning 100 Show opening for Fluid Ounces from 5/99. Very early Rollum show. Debut of Kari Anne with very very different lyrics.
-A 2004 Exit/In show--one of the few soundboard recordings I have
I'm pretty sure that I have more. I remember making another 12th & Porter show that blightman also circulated. It's all so hazy now, and since I never uploaded any of these to iTunes, I am not in regular contact with them.
Tom Foolery might have better access to at least some of these.