So I was thinking about doing a Synnibarr conversion of the classic dungeon crawl B2 The Keep on the Borderlands. Problem is, unlike most fantasy heartbreakers, the World of Synnibarr monsters have suprising little correlation to stock D&D critters. No trolls or orcs or minotaurs in WoS. The undead are under-represented as well. WoS has a race called gnolls that have very little to do with the D&D critter of that name. Looks like if I go ahead with this insane project I'll actually have to build an homage to Keep on the Borderlands pretty much from scratch. I'll need some sort of crude backstory to explain why a half-dozen fearsome humanoid races are taking up diggs in the same smallish cave complex.
Maybe I should go back to my earlier idea of doing a Savage Worlds conversions. The folks at Dragonsfoot seem plenty willing to help.