So, what would you like to see? Favorite creatures from the original Creature collection? Ideas about the Scarred Lands? What stories would you like to see resolved? What characters would you like to step forward? What places should be brought to light, and which should be left to shadow?
Favorite critters (following the 4e design philosophy where different 'roles' of mobs would be mixed into an encounter);
Asaatthi warriors, druids and wizards, perhaps with Lizardfolk slave-warriors
Packsoul/Feral
Slitheren, perhaps with giant rats, and *really* giant (large or even huge size) rats as mounts and attack beasts
Osseus Calabra / Necromantic Golems
'Masterwork' Skeletons and Marrow Knights (an encounter from Hollowfaust could include a living Necromancer, a pair of Marrow Knights, some Masterwork Skeletons and a single Osseus Calabra or Necromantic Golem!)
High Gorgons and Low Gorgons
Hags (perhaps with a less-silly-looking version of Hag Children as fodder, representing human children kidnapped and tainted by their potions)
Spider-Eye Goblins w/ Cleric of Belsamaug (or Sethris) and giant spiders
Belsamaug assassins
Sutak
Hollow Knights
Favorite places;
Hollowfaust - a city full of necromancers!
Shelzar
Fangsfall
Mithril - a city full of paladins! Perhaps some Hollow Knights would relocate there as well, to mix up encounters from that area, or perhaps Mithril would fall and the survivors would live in the Gleaming Vale?
Hornsaw Forest
Favorite characters;
the PCs (not a big fan of setting-specific NPCs)
a group of Iconics for the Scarred Lands would be neat
Other stuff I'd love to see worked up;
Penumbral Mages (as a path for Wizards?)
Necromancers (with enough versatility to be able to replicate the founders of Hollowfaust, a half dozen *very* distinct and different Necromancers)
Gold/Silver/Iron Knight paths for Paladins from Mithril
Exemplar path for Monks?
Incarnate path for Druids?
Albadian Tattoo magic (perhaps with a tattooed witch path?)
Paths for Druids and Sorcerers related to the various Titans (Chern's faithful gaining powers related to insects and disease, Glaurak's devoted having powers related to draining others and enhancing themselves or actual consumption and hunger effects, Thulkas's brethren having powers related to iron and fire, Mormo's children having powers related to venom and serpents, etc.)
Paths for Clerics based on the eight main gods of the setting (Corean, Madriel, Tanil, Hedrada, Enkili, Chardun, Belsameth and Vangal). Alternately, some other way of giving the Clerics of those dieties some specific flavor.
Perhaps carrying over the 'invocations' as minor rituals, with beefed up effects, for devotees of those gods?
Racial variations for chain-wielding slaver Charduni Dwarves, savage tattooed Hornsaw Elves, the golem/craft-oriented Dark Elves of the setting and the native Half-Orc population (which come from a stable nation, with both half-orc mommies and half-orc daddies, not any sort of violent origination)
With a limited selection of books, it might be best to stick to Ghelspad, rather than attempt a spottier coverage of Termana, Asherak, etc. as well.
