Not sure what you mean by Skyrim
build, but my favorite things about the game are:
Sneak (especially with archery) for the quick take-down in guerilla warfare.
Two-handed because you can do a lot of follow up damage very quickly against foes who manage to reach you; especially when there are several at once. It's easier and apparently more effective than dual-wielding two one handed weapons at once; at least, it is for ME.
Irresistible-Force shout - I think it's funny when you blow a mouthy city guard right off a high city wall in Markath and (even if the resulting fall kills him) you don't even get charged with attacking let alone killing them because that shout doesn't count as an attack for some reason!
Perk that allows fifteen times damage for successful one-handed sneak attack; it's enough to kill almost anyone if you have even a halfway-decent one-handed weapon!
The dungeons have so much more variety and realism than in previous Elder Scrolls games
Nice musical score in places, including some recycled from Morrowind
Enchanting weapons and armor, especially with the duo-effect perk. Can make a huge difference in combat effectiveness; especially against bosses and dragons.
Dare to be different... and make a difference.
To boldly go where no one in their right mind has gone before...