Trying to remember back to the morrowind days, I think that part of it for me, is how much the classes differ. With TES, it wasnt so much about your class dictating which skills you "could" learn. You were pretty much free to take any skills that you wanted. Hence the reason why I love "all can learn" so much.
Granted, I know that this makes it more of a challenge, and enjoyment, balancing out your team, with the skillsets that they each get.
However, I also play with no autolevel, and after playing as a solo player, I tend to try to hog the kills.
Because for me, the way that I build my toons, I dont need the other guys there a lot of the time.
For me tho, DA's saving grace was it's intrigue. There was just SOOOO much about the story and the characters that you could just sit and wonder about. Or get caught up in. Like our discussions about Morrigan/Flemeth. or Loghain. Or Alistair. There were VERY few characters or plots in TES that had the kind of depth that DA does.
I mean, for me, TES had NO characters that I loved. Or hated. Or just wanted to outright murder repeatedly.
I LOVE some of the boss fights in DA. I have nemeisis characters that I truly despise. And I have favorites that I would very sorely miss, if they weren't around.
For me, a perfect game, would be the expanability of Morrowind/Oblivion, combined with the heroes and graphics and classes of Guild Wars, with the depth, romances, and characters and histories of Dragon Age, with some Ultima Online housing animal taming, and Barding, thrown in. And then make it easy to LAN/WAN party. Be able to play alongside the family, or with/against friends. Forget the whole MMO bit, as thats just too addictive, but yeah... that for ME would be the perfect game.
One thing that I will really say AGAINST DA tho, that has just driven me up the wall. General areas where critters REspawn. Ya know... just a big area of woods, or a cave, or a plain (tho thats kinda boring) where you can walk in ANYTIME and just hackNslash.