I personally wouldn't call either shooter an MMO, but that is nitpicking. The control scheme they have in place is as close to an TES game as they could do, so for the most part it transitioned pretty easily. Now PvP was not up when I had my runs in TESO, but I can guess that it will just be a faster paced style of the PvE system. I mean if you could give a specific single player habit I could be more specific. But I want to say that assides from the more "MMO-style" fast travel system the way you quest in single player should be how you quest in TESO. Now Hardcore Roleplayers may find issue with trying to "Eat, Sleep, realistic healing" and all that self imposed challenge, but will find other ways to really get in character. I hope I answered your question well enough, if not please let me know what part (if not the whole thing) I missed.