I just DLed dawnguard for crossbows and werewolf perks
Same here! :D
I can't agree with the OP. I'm really love Skyrim, when compared to Oblivion. However there are aspects of the game I'd point out as not so well-done.
Balance issues
Great that Beth has thrown out the awful monsters matching exactly to your level as in Oblivion, including every bandit scum running in full ebony equipment. Skyrim is match more interesting when you are low level and really have to watch the environment when you're level 5 and trolls or sabrecats can eat you up for breakfast. It adds a thrill as it should be. Then comes a short moment when you gain a couple of levels (leveling is really easy, even too easy) but your core offence skills are yet not developed well and stronger and stronger enemies appear that one-shoot you. This phase is really irritating, but short. Then after leveling to around level 35 you become so powerful that you start to increase the difficulty level and after a while even Master becomes a walk in the park. And it's so easy to build overpowered character - my destruction/conjuration wizard nuked everything. I see some other builds like daggers assassin with x30 damage from stealth modifier, or a tank with 80% physical and 85% magic damage reduction have a potential to be even more overpowered. No to mention god-mode if you abuse alchemy/smithing/enchanting combo which makes any other perks or player skills redundant
My first character was dual-casting destruction school specialist with conjuration as a second specialization. While in the beginning it was so refreshing to finally play a powerful mage character in TES game but after a while I felt like playing on cheats. I put a lot of effort in enchanting (100 and the set of perks to reach the double effect enchanting), and even without abusing it with +enchanting alchemy potions I was able to craft gear putting deaderic artifacts to shame. And fights were so easy when I summon two elementals and dual-cast aoe spell with stagger effect. Only surprise I got during fight with one of the dragon priests when he reverted the summons against me. I got bored on master difficulty before finishing game.
Right now with Dawnguard I rolled stealthy sword/daggers dual wield fighter and archer. So far it's more challenging since my sneak is not so good and I'm not yet able to sneak behind enemies in dungeons. On the other hand this particular char is a werewolf and in beast form he just rips through dungeons like a knife through butter. Power attack to floor everyone including dungeon bosses and fast and furious claw attack while he is defenseless = another god mode.
Dragons
Stupid AI - how many times a fight looks like the dragon is just flaying a few minutes in the air then makes a few easily avoidable attacks and stops them and goes up in the air to give you time to regenerate health/mana. Dragons are way too easy and fights with them are... well, cheesy. Worse, the Oblivion-like scaling of dragons = on level 7 it was easier for me to slay a reptile then to get rid of sabre cat in the wilderness.
Too easy progress with the factions
I miss the way it was implemented in Morrowind so you would need to get appropriate attributes/skills to reasonable levels before you get promoted. I welcome the possibility to join different factions in parallel without conflicting quests, but it should not be like you become arch-mage of College of Winterhold while the only magic-related thing you do is casting a simple Magelight once...
Changes/flaws in character progression
I really miss the main attributes. Having just three bars as main statistics describing character is definitely a decline for me.
On the other hand perk trees are way better then static perks assignments tied to skill level. You still have freedom and train any skill you want and if it comes high it's benefitable. On the other hand it's not like if you train all the skills than every character is the same except the health level/luck attribute. Another issue is that while some perks are must-have if you specialize in the particular skill (+damage % for weapons/spells) while other perk trees are nearly useless even if you specialize - for example lock picking/pick pocketing tress are nearly useless even for a thief.
Disappointing puzzles in dungeons
When I watched the demo walkthrough Bleak Falls Barrow it was so promising, but when you play a game you realize that there are just two puzzles in the whole game - claw and stone statues. It's cool when you encounter them the first time, but especially the stone statue riddle becomes nothing more than irritating chore since you always have an appropriate pattern shown just by the door. And it could be so awesome if Beth hired the Grimrock guys for creating unique puzzle for every dungeon. Or at least make not 2 but 20 types of puzzles and ensure that solutions are not so obvious and given to the player on a plate.