Since I couldn't find a thread in a similar vein, here we are.
Are there any features or additions you're hoping or wishing to see in Fallout 4, which haven't yet been confirmed?
Personally, my greatest want from the game is a bit abnormal: I want a wedding ring on the main character, equipped in their inventory at the moment they spawn. Seeing how they have a spouse during the introduction, it's only natural that this be a feature. For a more emotional impact, having it equipped could lock out all romance options, or those in the same theme, instead provoking a comment about the wedding ring, suggesting that your character is still faithful to their spouse. Of course, you could un-equip it, possibly losing a tiny but recognizable bonus, but gaining the ability to participate in more intimate conversation with NPCs.
It would also be pretty great to acquire some sort of vehicle, since the game world is going to be huge, and travel will become even more of a chore on foot for those who value immersion and/or dislike fast travel. A motorcycle could fit in well, though that presents the issue of your dog keeping up while you're on the road. A car could be possible, considering the Highwayman of Fallout 2, and it would allow you to transport followers. If this doesn't end up being a vanilla feature, I can see a mod coming out pretty quickly.