I hope too D: I mean i was hoping for them to make DLCs in skyrim wich allows us to go to a part of another province but now... with elder scrolls online

Dont see that happen... hope it never affects skyrim and upcoming TES games.
Indeed. And what I fear is that they'll necessarily have less time to develop each province's lore if they make a TESO in the whole Tamriel, and that it could "lock" too much of the possible lore for the remaining province, and limit the possibilities for the future main, single player games. Wait and see, I have as much curiosity as I have fears.
Edit : Moreover, I fear that their three main factions (and the number of factions tend to be forced to be limited in MMOs) would reduce the political and social complexity of Tamriel. I also fear that main factions in MMOs could be too monolithic, and not take into account internal dissensions and rivalries. My biggest fear is that the MMOs structure and gameplay couldn't account for the complexity of Tamriel. But again, this is TES, and I've already been amazed. If anyone can change my mind about MMOs, then I'd bet it'd be TES.