If I could just chime in, as a lurker/lay troper, I'd personally love to see Troper Tales continued in some form, even if that means starting over from scratch, and with restrictions. Although I'm damned if I can offer much in the way of technical suggestions on how to keep them as free of natter/scum as everyone would seem to like. 
Aside from maybe restricting TTs by default—at least for some tropes—and/or assigning someone to approve or reject TT posts. Which all sound draconian, too labor-intensive, or technically impractical.
Or, hell, maybe even allowing VOTING on TT entry acceptance—make it like a weekly "game" on the ATT main page, "Does this Troper Tale constitute a valid/interesting instance of this trope in real life?" Kinda like Steam's "Greenlight"—with mod screening/veto of TT entries that are outright troll bait, smutty, poorly written, repeated urban legends, confessions of felonies, etc.
Aside from maybe restricting TTs by default—at least for some tropes—and/or assigning someone to approve or reject TT posts. Which all sound draconian, too labor-intensive, or technically impractical.Or, hell, maybe even allowing VOTING on TT entry acceptance—make it like a weekly "game" on the ATT main page, "Does this Troper Tale constitute a valid/interesting instance of this trope in real life?" Kinda like Steam's "Greenlight"—with mod screening/veto of TT entries that are outright troll bait, smutty, poorly written, repeated urban legends, confessions of felonies, etc.