Seriously, a "better" 2handed axe would end up as a poleaxe, or imba.
At first glance, I agreed with this. However, the great long axe(polearm) is superior to the great axe(2h) in just about every way.
Negatives that the 2h version has compared to the pole version: Unbalanced, 3 Less base damage, even less heirloomed damage. Significantly less reach. No thrust.
As a matter of fact, the only redeeming qualities of the 2h great axe is that it is cheaper, and slightly faster. As it stands currently, if you wanted to use an axe like the great axe, or great long axe as your primary weapon, I think it's a no-brainer to go polearms. Therefore, I would support an additional 2h axe in the same price category as the great long axe, with similar stats. That would give someone who wanted to be a primary axe user more choice in how they wanted to play/build their character.
Vote Heroin for CHOICE!
EDIT: oooh, that "Hache Boreene" axe would make a great model for a top-end two-handed axe. Someone should do that.