RiDaku said:

How will the Noxious Scythe be affected by the weapon diversity beta? Is it classified as a spear, or a 2h sword with +2 range? How will the Noxious Scythe be affected by the weapon diversity beta? Is it classified as a spear, or a 2h sword with +2 range?

Nothing should change in here - halberds and scythes are classified as polearms. Basically the weapons with existing class effects are remain as they are, just everything else gets something depending on their weapon type.