(OK, I think it'd be really neat to do a game about the first days of Avernum, like Avernum: Origins, but not until the far future.)
The storyline is the most detailed and twisty of any Avernum game. I think it's really cool. It's definitely very apocalyptic. Much of Avernum is going to be trashed. (Or trashed again.)
Many characters will return, and some of them will get the dramatic ends to their stories they deserve. Much of the future of Avernum and its place in the world will be settled. (And, of course, the player will make a real difference in this.)
Other things of note:
* Every graphic has been redone. All of the icons will be anti-aliased and have shadows, which makes the game look much nicer. It's the prettiest game we've ever done.
* I will use and expand upon all interface improvements from Geneforge 5. Being able to play in a window, play at any resolution, etc.
* The buffing system will be very similar to Geneforge 5. Haste is weaker now, and you can have fewer buffs overall. Haste potions will be full double actions, though, the sort from the older games.
* A bunch of game and system improvements. Dual-wielding weapons is back. The world map will be much more useful, as will quest destination marks on your map. You can see full information about items by mousing over them. (Finally!)