I wasn't around in those days, but in 2004 it seems Clinton R Nixon started a project called 'Sweet20'. The plan seems to have been that modules from Sweet20 could be applied piecemeal to D&D 3E, or with all the modules you could play without D&D 3E altogether.
The only module that I can find is experience
, which was based on Keys from The Shadow of Yesterday
(you might know them from Lady Blackbird
). But it got me thinking: there's been nine years of new RPGs since TSOY; what could they contribute to D&D?
The one thought that came straight away to me seems like a cop out, but here it is:
In Love in the Time of Seið
, players can choose what the places look like, choosing from three options. I think that would be a cool approach for magic items and monsters.
The medusa is:
A writhing mass of snake heads that slides onto the heads of virgins and controls them.
A snake-tailed monstrosity, hooded and fork-tongued, with snakes for hair.
A statuesque woman dressed in a wine-dark robe, with an aura of coral snakes about her head.