Honestly, I'm not sure yet. Some Foreign Cartoons would be nice, though. Maybe Lolirock and the Shopkins cartoon series for the girls to have some enjoyment in animation even though Netflix has both of them.
Shows I'd like to see them get:
Little WItch Academia
The DreamWorks/Netflix original series since NBCU was able to acquire All Hail King Julien, though maybe that will have to be when the series reached its conclusion?
They already have the rights to Dragons: Riders of Berk, the How to Train Your Dragon TV series).
Outside of the obvious Dreamworks Netflix offerings, here's a good list of possible contenders The Bagel and Becky Show
Thunderbirds Are Go
Littlest Pet Shop (18)
Little Witch Academia
Monster Hunter Stories
Maybe Hanazuki Full of Treasures but outside of airing once in Canada, Hasbro seems pretty comfortable airing on YT