I'm playing with a nearly maxed skill in archery and maxed out smithing and enchanting, using a glass bow that I smithed to even higher strength after chugging a blacksmithing potion, and the only things I can one-shot are low-level bandits and mages, and most creatures. It still takes me two shots at minimum to take out GIants and at least three for mammoths.
I'm at level 59 on Adept. I'm really starting to find that something's a bit off about all these claims people make, especially when I'm rocking gear enchanted to further increase my damage with bows so that when I equip my glass bow, damage is rated at over 300. I'm not one-shotting much that isn't low level compared to me, and not even when I'm using sneak attack crits.
But then again, I've been playing normally, and not powergaming. The balance is perfect, unless you're the sort of person who powergames his character. Powergaming is going to make the game unbalanced, and in your favor.
And you're suggesting that the balance of the game be tweaked to suit you, part of the minority of the huge gaming audience that Skyrim has, instead of being balanced for everyone else who probably just plays along as the game happens, which is probably how the majority of people are going to be playing it?
This is like that one idiot who kept saying that because he was using top-tier gear, maxed out sneak with the perks that boost sneak attack crits, and using the gloves that further double sneak attack damage, he was overpowered and the game needed to be fixed. Nevermind the fact that he didn't know what "overpowered" meant by his own example, because he was: Maxed out on sneak with the sneak attack crit bonus perks taken, using gear that further boosted his sneak attack crits to the point that as long as he could get the sneak attack crit, he was hitting things with a massive damage bonus that would one-shot a lot. If he wanted to actually prove that he was overpowered, he would've done all that on Master WITHOUT USING ANY GEAR THAT BENEFITED HIM AND MADE IT POSSIBLE IN THE FIRST PLACE.
It's one thing to show that you're "overpowered" when you're high level in certain skills, and otherwise have top-tier gear that outmatches a bandit's. It's another to be able to accomplish many of the same feats with just ordinary, low-tier equipment. Because being able to one-shot Giants on Master with an iron dagger? That might be overpowered, especially if you don't even take any perks in the Sneak skill tree.
The game is balanced fine enough for the rest of us who don't powergame at all, thank you.