I'd get guys from Obsidian / Troika and get them to make a cRPG set in Warhammer universe.
If I were a billionaire, I'd pump tons of money into it (lets say, 100-200 mln) in order to get the RPG game I've always dreamed about:
- huge world, which would be a replication of the WH world (not the whole though, as it would cost even more money)
- complete non linearity, the world would be populated with loads of characters, and you could become anyone - from a thief hanging out with some scumbags, a dwarf engineer building some crazy machines, build up an army and conquer a whole province, join the chaos forces, etc etc
Rather than having one main storyline, it would be comprised of 'side quests' (some of which would be big enough to be called a main storyline in some other game).
To summarise it, it would be a huge living world offering countless opportunities to the player, in a quantity so big, that it would be nearly impossible to complete everything in the game, as the quantity of weapons, quests, characters would be huge.
It would be fairly realistic, meaning if you do some bad sht, you're gonna become a wanted man - propably having to avoid the city, or be really carefull (defeating hordes of guards by yourself would be impossible).
The point of realism would be forcing the players to roleplay - depending on your race, gender, your reputation, your social position everybody would react to you differently. You'd have to eat, sleep (if you're out of the city, you'd have to set up a camp, and before going out of the city, buy some provisions, or hunt if you know how to do it).
You could have a limitless group of companions, but getting them wouldn't be so easy - this element would also have to be realistic.
It would be a game that people could be playing for years. The Elder Scrolls franchise would fail miserably - who would buy any of their games if you could get one that is better in every aspect?
On top of that, multiplayer which would be seamless to the single player experience (other players also can talk to others).
The death in the game would be permanent, unless you found a way to defy it (by becoming a very powerfull mage like Nagash, or by pacting with the chaos forces).
Basically, the whole point of it, would be to make a game that tries to give the player as much freedom as one would get during a PnP RPG session.
Another idea - get CD Projekt to make a game in Neuroshima universe (it's a polish PnP RPG set in postapocaliptic USA, the setting imo is more interesting than that of Fallout).
Post edited June 06, 2013 by DrYaboll