Big open worlds, many planets to choose from, choose your order thus making your story, your story ( like how in the vidoc someone said odst was the best story because you can choose its order)
That mountain editor thing you saw.... The improved forgeworld editor. ( yeah i know it wont be called forgeworld...) perhaps there is some sort of pc/ mac/ browser tie in so you can use a mouse....
They also mentioned how the game will be very community driven, and that they dont know where the community will take it...
Top 10 new planets of 2013.... Sounds like a future youtube post... To find the coolest user created content for the new game...
In the vidoc they talked about how they originally wanted to make a huge open world, that was always there.... They also said they coldnt do a rpg, so they went with a first person shooter....
Well maybe theynare getting back to thier roots...
Whatever its going to be im sure there will be tons of community content.