Generalized assessment of Skyrim with 20 hours clocked:
All the good aspects of Oblivion, most of the bad stripped out.
Very clearly and not even trying to disguise the fact it's a console port. Control interface is fucking weird. A lot of buttons are used on your keyboard around the WASD keys. Might as well not even bother to use the mouse, as it's simply less buggy to use the pseudo-console like controls. Weird but not a deal breaker for me.
Very much in line with Bethesda open world sandbox lego play. The quality of the stories is arguable, but the sheer scale of interaction and interlocking that occurs is amazing. Small obscure things I did offered tremendous, but optional, help in other quests like the Main storyline.
Dragons are a big deal but they're not the apex predator, either due to scaling issues or bugs. However the RANDOM ENCOUNTERS with them are hilariously random. I've had some spawn, kill all the bandits in a world den I was clearing out, and then fly away. EXP stealing fuckers.
Magic feels stupidly powerful and I just rolled a mage character for 5 hours. It's very pretty, somewhat simple to use, and holds its own as far as mono-mage gameplay is concerned. So far I've not had issues with magicka unless its an extended fight, which I definitely need to choke down bottles to keep going in.
The world is MASSIVE. FUCKING HUGE. I walk everywhere instead of fast traveling and man IT TAKES ME A WHILE to get to places. The crazy amount of things I discover along the way is pretty neat. If athletics was in this game I'd have it max by now.
Some things in Fallout 3 are present in here, such as kill syncs, lockpicking mechanics, companion system, etc. Not too familiar as I never got into Fallout 3. If I had to wager, Skyrim is the love child between Oblivion and Fallout 3 in terms of mechanics and graphical presentation.