Thought about this a lot: Axe/Mace in one hand then a healing or destruction spell in the other is one possibility, Dual axes is another (if there is a dual 2-handed weapon perk I'll use 2-handed if not then I wont), possible Gandalf combo staff in one hand sword in the other and finally for my sneaky character an illusion spell in one hand then a dagger or (if they introduce them) a crossbow.
On another note these are all playthroughs I've decided to use: 1/2 Both Nords one at least will be called Beowulf and then another typically viking name for the other, 3 is a Breton who I will make look as much like Gandalf as I can but probably with armour finally 4 is a Khajiit and will probably be my favourite if sneak attack bonuses are still hilariously overpowered.
Yeah I've really put a LOT of thought into this... but then again who hasn't.