Two-handed weapon with single hand. (Barbarian)

I want more variety of barbarian weapon selection.

Let’s take a look at Barbarian’s Combat mastery tree.
There are Sword, Ax, and Mace Masteries that can be learned at level 1.
There are Spear, and Polearm Masteries that can be learned at level 6.

Currently, only the sword can wield two-handed with single hand.
But, I think the level 1 mastery weapons ax and maces should also be able to handle two-handed with single hand.

For example, high attack rating is achieved by using 2 Angelic rings with Angelic amulet. Similarly, high chance of crushing blow will be achieved by using 2 Stone Crusher with Immortal King’s full gears. And many other settings are possible.