For me, my fails are more geared to immersion. For example, why is it everyone is an "expert" at identifying the contents of potion bottles and enchanted items? Are all potion bottles labeled so as to identify the exact effects of the contents? If I pick up two red bottles, how would I know that one is different from the other? Perhaps someone put magicka regen or poison in it? Another point. I find some loot in a dungeon. How do I know they are enchanted with 10% fire protection? Personally, I would like to see a gameplay mechanic incorporated that requires you to either study alchemy or enchanting, or have to take them to an alchemist or enchanter to have them properly identified. You would still get the "benefits" of the potion or item, but won't know exactly what it is other than by what happens in-game, unless they have been properly identified. Unfortunately, I have yet to find a mod that does this.
Another point of contention is that increasing the difficulty in the game only seems to affect combat. Why not affect the amount and kind of loot/items found? I do believe the loot might level up a bit if you play on the higher difficulties, but why not make enchanted items, potions, and gold more rare? Sure, there are mods to do this, but isn't part of the game difficulty finding loot, gold, and potions? If they are in such abundance, even at the higher difficulties, I think that still makes it too easy. Why not more traps and enemies as well? Seems all the game does is increase enemy HP and their damage.
Well, thank goodness for the modding community. The game, as it is, is entertaining. Just seems to me the concept of difficulty is rather cheap, as it is in many games. Still love this game, despite its warts.
Game difficulty should be something more/better than just increasing and decreasing damage multipliers on the player (and only the player). I like the idea of harder loot, meaner merchants, more and smarter enemies... As it is, all you need to do to dominate Legendary difficulty is grind Conjuration and Illusion, give atronach staves to your two dead thralls, and give the Sanguine Rose to a follower.
That's definitely a Skyrim fail right there.
I'm okay with not having to use some kind of 'Identify' spell. With the way magicka regenerates, that would just be tedium with no benefit.