The game is more likely to be like fallout 3 since bethesda will likely make game again but im hoping they will not just toss away all the fallout new vegas features. For one i hope there is still a faction system returns and the open ended missions fallout new vegas had much more outcomes. Fallout 3 captured the post apcalyptic atmosphere and struggle for survival more succesfully at least to me it felt like it had better and more real autmophere. Also im hoping hardcoe mode returns and more features from older games.