'The Heroic Fantasy Handbook' has a bunch of new spells, magick systems, ten new character classes, etc. But Eric your an Astonishing Swordsmen & Sorcerers of Hyperborea supporter. How is this different & what does this have to do with Gary Gygax's Greyhawk? First of all 'The Heroic Fantasy Handbook' goes in a completely different adventure setting direction then Hyperborea. ACK's puts things squarely in the Roman Empire Era with its Auran setting & these books bring things over to the barbarian's side sort of. ACK's always keeps its thumb in the Dungeons & Dragons themed pie & this isn't a bad thing because it shows ACK's OSR roots in Labyrinth Lord.
Take Greyhawk & turn it on its ear! A far more humancentric Flaness where everything is up for grabs & the PC's have a far more easier time to carve out their own piece of the Sword & Sorcery action. The dimensional portals are far more open & we've got wizards,cults, demons,etc. trying to dominate the landscape.
All of the events happen of Greyhawk happen but give the setting more of a U.K. TSR or Celtic flavor with the Rain of Colorless Fire bringing far more destruction to the world. We've already seen there are many alternative versions of Greyhawk out in the multiverse why not an ACK's Swords & Sorcery style version of the classic campaign.
The thing about classic TSR systems & settings is how easy it is to adapt them to current OSR tier products. On the whole there's something uniquely satisfying about paying homage to Gary Gygax whist creating something unique. The Twin Devastation were caused by the events of City of the Gods echoing across the planes after all there is a Blackmoor in Greyhawk. I need to think about this campaign far more & iron out some of the details before deploying it on my players.
And how does all of this tie into TSR UK 6's All that Glitters? Well kids you'll have to tune into that one tomorrow! For now keep em rolling!