Most things are interactible. Good or Evil. Creataing weapons. Make decisions and see multiple outcomes. You can really control your enviroment.
This game has a lot of potential, for future playing. I like how they used the Morowind type of system to create a gaming experience that could be reapeated. This game could just be upgraded, and expanded on. The programmers should not worry about making a new game for a few years, but just make expansions for this one. Tell us about the annex of canada, or involve us more into the rest of old america. Have a time dilation effect to get places that are far away. Say a day goes by, have it take a little longer to get some places, have a little longer load time, or sleep a day (in game time) to get the next state.
Ask gamers to create more weapons out of the junk they find. Place more different kinds of junk to make things out of.
Another possibiity would be to allow us to play after the game was completed and create a scenario where the gamers actually bring the world back to life planting trees, grawing things building cities back up, become the mayor of the goverenor of these flourishing new towns. Have so conflicts break out in the wastland still but all across america that need to be solved. Create new scenarios in different places, more guns, more junk, more everything.
The posibilties for this game are endless, expansion, after expansion, after expansion......