Personally my votes went 3, 2, 1, 2, 2.
I disliked the rapid way in which Oblivion's story took centre stage, and I never could focus on something else once the Oblivion gates had sprung up without breaking my suspension of disbelief. It's absurd that I can put the invasion from the Plane of Destruction on hold while I rise up the ranks of the Thieves' Guild, and the invasion got to that "this is a really big deal" point very early on in the story. I much preferred Morrowind's style of having you slowly unravel the forces at work behind the MQ.
I love choices with consequences in my games. To me TES games are Dungeon Masters, responsible for making sure the world reacts believably to my actions. It's very difficult to achieve this by pure simulation (as Fable fans can surely attest to) and so a small network of decisions that have a tangible effect on the world go a long way toward creating the illusion of a fully reactive one. Fortunately it sounds like BGS is going for this effect from what we've heard about sabotaging the Riverwood mill and such.
I adore morality in videogames. Videogames are a storytelling medium at their core, and I can't invest myself emotionally in a story that I don't identify with, and life is very rarely black and white morally. Being presented with situations in which the "right" course of action to take does not fall squarely under my character's archetype allows me to identify with them the most, and to create the most complex imaginary inner motivations for them. Essentially, I think that morally ambiguous situations are the ultimate RPing device, and should be included as much as possible.
I find perfectly happy endings patronising, but "bad" endings unfulfilling. Thus, http://tvtropes.org/pmwiki/pmwiki.php/Main/BittersweetEnding tend to hit the nail on the head for me. For examples of great stories that benefit (in my opinion) from bittersweet endings see Moulin Rouge, Halo, Metal Gear Solid, Shadow of the Colossus, CoD4 and Modern Warfare 2, Red Dead Redemption, Fallout 3 (before Bogus Steel), Fable 2's sacrifice ending (before Knothole Island. Stupid Knothole Island...), Half Life, BioShock 2, DA:O, LOTR, Les Misérables, Harry Potter, and many, many, many more more that I have not played/read/watched.
And finally, while I would not see romance become a major theme of TES (I just don't think you can have a dedicated love story with so much violence, and I enjoy TES violence), I do think that a well developed romance could breathe some much needed life into the series's infamously cold NPCs. At the very least I would like to see BGS approach the subject of six and romance more maturely than they have in the past, or not at all.
Go go go.