I feel as if it drops a bit too low.
Currently, if you really play in an effective team, you can get ~6-7k an hour, and this is by a long shot.
Generally, you'd get 5k.
I feel this is a bit off and that it should be increased.
BUT.
I believe offering us more ways to get Nethershards could help a ton! Perhaps BoS for Nethershards? Class missions?