this is probaly not well thought out but ill put it on the table :P
allow a protection paladin to wield a 2h weapon as a 1h but as paladins cannot duel wield it will be 2h + Shield
as there are no slow 1h tank weapons allow us to use a 2h that deathknights use or furry/arms warriors
as prot needs a very slow weapon for hammer of the righteous and we need more stamina to make up for the new tank gun warriors can get i think this would be fair