But anyway, @ OP, my biggest disappointment is in the companion followers. They are awful. No personalities and buggy as hell, and they can't ride horses so they end up being accidentally left behind or killed by bears or something...
I don't know about the main-quest areas as I haven't started the main quest yet. I'm 45 hours into my gameplay and have visited three cities so far. All I have been doing is wondering around finding things on my own, I don't play with the hud on and don't do quests of any sort. When I find a fort or a cave I go into it and clear it out. And the ones I've been to, and my map is dotted all over, have almost all been very small compared to the ones in Oblivion. Perhaps you have found a couple that take weeks and weeks of in game time, in which case that would really be amazing, but I haven't found them yet, and kind of find that hard to believe. If I do ever find it I will become a believer I guess. And no I haven't used horses, I don't see the point to them for my gameplay style.
In Oblivion I could travel around for the time I've spent so far and not run across anything similiar the whole time, I've passed by the same caves now three or four times already. This game map is much smaller. Again, I didn't say it was a bad thing per se, but there is no comparison. You are wrong on this point, eventually you will see the error of your ways in this matter.
ETA: The average time it takes for me to clear through most forts and caves I've been to is probably an hour or so (ETA this is in game time not real time)...a lot less the the weeks and weeks of these so called non-quest dungeons you've been to.

it took me a while to figure out what was attacking me since the water was only about knee-deep, but once i saw those evil fish i thwacked away at them with my mace until they were dead dead dead! i wasn't aiming too well, so i'm not sure if they were difficult to hit because they kept darting backward out of range or if being above-water vs. underwater made a difference... or i could just svck at 3rd-person melee aiming.... but at least they were dead!

