Anything specifically you feel needs a fix?
for starters.....
The lockpicking skill is practically useless to level up. You can pick a master lock at level 15 (starting stat) with no problem, provided you have enough lockpicks for trial and error. Which isn't an issue since they are WEIGHTLESS and cheap and plentiful.
So there's no incentive to level it up. And in my opinion, the perks are useless in the skill tree.
So, I want lock bashing. And I want it implemented well. I want it to make a loud noise so that it has a chance to alert nearby NPCs of my crime. And I want it to have a chance to damage some of the contents inside. And I want it to be based on either your characters strength (which isn't present at the moment) or your weapon skill (higher skill, higher chance to bash the lock open). This is so there is some incentive to choose lockpicking over lock bashing if you aren't melee inclined or want to be stealthy, or both. This works with doors as well.
And I want my godamn open lock spells for mages. There's no reason for removing these spells. And before you say "oh, but then there wouldn't be any reason to choose lockpicking over alteration, since alteration has more benefits than lockpicking.", let me remind you that you need to have like 4 different spells (one for each level of lock), and have a high alteration level to unlock higher tiered chests. So you would have to do a lot more leveling of alteration compared to leveling your lockpicking skill, which I've already explained is broken anyway. You can open a master lock at any level of lockpicking, while you'd have to do a good amount of leveling to open harder chests with alteration. And remember, the more you level it, the higher your character's actual level. And enemies scale with you. So it's automatically balanced. I really don't know what bethesda was thinking on this one.
So there's that. And there's much more. I'll save it for another post.