while the iron scythe and the grand faux are all fine and dandy it'd be nice if there were other tiers ranging from wood to diamond (I'm probably being redundant here as it may already be in your to-do list) there could also be a bone scythe (possibly as an artifact rather then a craftable item) that is extremely effective at reaping souls (giving 2 souls for the price of 1) while being rather like the wooden scythe in durability and attack damage. another feature that scythes could have making them more useful beyond being a necromancer's choice weapon could be that they can effectively harvest crops (possibly in a large radius depending on the tier) and have a chance to double the output of said crops (again this chance is improved by the tier of the scythe)

Crop and grass harvesting abilities added in update 0.5.1. (did I say soon ? well, ehm, at least it's in now)

sounds fair enough