The speed of your dual attack (not power attack) is dependent on the weapon in your off (left) hand, so dagger in left and mace in right attacks with the same speed as dagger-dagger. The dual power attack for mace-dagger is a fast triple spin, which is superior to the awkward dual dagger power attack.
I think they need to make dual daggers the fastest way to attack, the power attacks needs to be super quick and the dual attack needs to be faster than any other combo.
I'd also like to see a dagger tree in the one hand perk tree, maybe stabbing weak points of the enemy to deal more damage. Improve the other specific (sword, axe and mace) perk trees as well, all three of those specialised perks svck, none of them are a good investment of perks.

