Good ideas! I agree that their should be enchantments for the shears, flint and steel, and hoe. Also for the hoe: Green Thumb- hitting a crop with the hoe yields double the normal(so possibly two wheat in one). An alternative for this would be Fertilizer- tilling ground "fertilizes" it and all crops planted on it are doubled when harvested. This should be added to the game regardless of which one they choose!
hoe: hydratation (the farmland will act like if they were near water)
unbreaking (like all the other tool/weapon)
growing (the wheat will grow faster)
flint and steel: unbreaking
spread (fire spread faster)
fire damage (fire deal more damage
shear: looting
unbreaking
efficiency (break wool faster)
new: sword: experience (you get more experience)
if you have any other suggestion, post a comment