I like all the options. You can build for one thing, a combo, or as much as you can pack in without ruining you focus. In the old games, you couldn't really do a Spell/Sword combo (Meaning one in each hand) effectively like you can in Skyrim. Of all the changes they made, in Combat, this is my favorite. If you get your 1 Handed, Block, and Destruction up, you can't do all 3 at once, but decide to go in with Spell/Sword, Sword&Board, Shield&Spell, or double up any of them (Except shields.)
I like the new Dual Wield too. Not as much for the Double Attacks, which are stompy, nor even the requisite Perks (Also Powerful) but the fact that it effectively gives you 10 distinct types of attack, depending on the situation. You can Critical Charge (with either hand), Power Attack (with either hand) regular attack, offhand attack, sidestep power attack (good to dodge a charge, and spinning backhand them when they pass you) and backstep Power Attack (Possibly with Paralysis!) With a Blades' Sword, and Skyforge Steel Waraxe, you can offhand Riposte' with the Sword for massive reach, then step in to hack them with Bleeding Damage while they're staggered while your Stamina recovers, Dual Power Attack for another Stagger, and finish them off with a Double Attack if you even have to! If you time it right (Before they close enough to hit you first) they don't even get a chance to counter, though for a variation, you can Critical Charge in first. (I love the offhand Blades' Sword backhand for this.)
Or, you can swap between a Bow, and Greatword (Or any of the 3 combos listed above) Or cast Duration spells, and wade in with weapons. Or summon a tank, and cover it with you bow. Or order your follower foreward... Yeah, that's another thing. If we can't do Coop, or Online PVP (yet) at least give us some friendlies to practice Mixed Unit tactics with! I love playing dressup with Eola, or Jenassa to make a Power Couple capable of taking Anything on between us!
There's all kinds of stuff in the Character generation system I love too. (Combat is my second favorite thing in Skyrim) but that's a subject for another thread...