I like this thread. Ok... here goes. (This post may get modded several times...)
Game 1:
A SP game combining elements of a space-fighter sim with a ground-based shooter in the spirit of the JK series. The space sim portion is completely moddable so you can create capital ships and fighters from any show or milieu. Fighters can make actual planetfall and land on planets. (No cuts or transitions). Fighters fly like SW ships- unrealistic dynamics, but old school 'sci-fi' flight like BSG, Buck Rogers, and so on. Fighters can launch via launch tube. (I actually modded this into X-wing Alliance for a couple total-conversion projects I did.) Space fighters must be faster than stink- when flying nap of the Earth the speed effect should be downright frightening.
The ground shooter portion of the game allows for melee and ranged weapon combat, offering the potential for SW 'Jedi style' gameplay with lightsabers. Also totally moddable to create different maps, settings, milieus, etc. Includes indoor, outdoor, space station (cap ship), and alien planet (like Mars, etc) settings. Includes ground vehicles, swoops, and various flying speeders and skyhopper type craft.
Moddable storylines, moddable NPC's, and moddable goals. Full mission / map editors for both portions of the game, obviously.
For the full 'pie in the sky' version, an AI interface that allows you to type in the parameters you want for both portions of the game, and the AI generates the ships, characters, storyline, etc to conform to your wishes. You can mod any scenario or milieu you like and the AI does the heavy lifting. For example, you tell it that you want to play a storyline set in the original BSG universe from the perspective of a Colonial Warrior. The AI creates that combo space sim / ground shooter game, complete with models, weapons, sound effects, music, and a SP storyline.
Game 2:
A sandbox RPG set in the World of Greyhawk based on the Castles and Crusades ruleset. Fully customizable avatars for PCs, with a party of up to 8 characters. SP and MP capability. The game would use an AI interface to generate modules and also adapt previously published AD&D modules set in Greyhawk, such as TOEE, Slave Lords, Saltmarsh, G-series, etc. The ability for you to outline a desired campaign that the AI would then compose and DM for you, or just allowing the AI to create a campaign with a starting point designated by you, the player.