You don't know that, I don't know that, only Bethesda knows that. TESV is possibly 150 years after the book, but there's no proof of that, just a rumor. It could be 10 years after the book for all we know. And nobody but Bethesda knows what will happen, there could be uprisings, or the Empire could regain control. You can suggest slavery all you want, but just like guns and multiplayer, Bethesda will have the last word on the matter.
This is precicely why we have this message board to make suggestions, and I for one agree with the suggestion of having slavery and some form of gun even if it's just a crossbow.
I also think that magic should be more underground, by that I mean that it's a taboo in the next game, you'll find that the mages guild has gone underground and segmented into different 'cults' of study, you'll be able to master all forms of magic but only by studying with each mage cult, witches and wizards are burned at the stake (and eaten like stake), so if you perform magic within eye shot of anyone in a civilized city then you'll be hunted by guards (not citizens), however if you are not caught, ie, you cast a sleep spell on someone, you're free to do as much magic as you please.
I want sleep spells in TESV, full sleep damage to the extent that I can create a spell that targets a single person and I can make them sleep for a minute or I can target a whole area (say 100 feet or more) and put everyone to sleep without having them all wake up and be my enemy, I want them to wake up and be clueless.
Stephen.