This suggestion appears to have gathered a lot of support (especially in terms of "Met Too's/Likes") and because of that we wanted to follow-up with a couple questions.
-In what way would splitting up cards be useful?
-Would it be helpful primarily for situations where your deck has grown larger than expected?
-Would it be helpful as a filter option when studying where you could choose to study cards 30-40, 15-50, etc.?
-Please provide any examples you may have where this feature would come in handy.
Any additional feedback with regards to these questions and anything else you might want to add would be appreciated.