If you're anything like me, you've spent a truly shameful amount of time with Skyrim since launch. After having spent so much time with it, I think now would be a great time to talk about the skills: what's good, what's not-so-good, and how to get the best out of the skills. Let's keep plot-and-quest spoilers out of it (don't talk about specific Daedric items or Shouts that are awesome for a certain skill/build!), but let's assume that MECHANICAL SPOILERS REGARDING PERKS AND LEVELING BENEFITS abound.
I'll get us started by saying that Destruction is pretty awesome. Each skill increase reduces the magicka cost of spells and allows you to get more charges from a Destruction-charged staff. The additional secondary effects for Fire, Ice, and Lightning magic are quite good. I'm curious about a few things though. Is there any reason to pick up the rune-enhancing perk if I don't use them? That is, is there a completion-bonus for getting every perk in the tree or a benefit to it that I don't see? Also, does anyone know if ice magic slows enemies down? It seems like it does, but it's inconsistent; maybe if they're low on stamina?