There is limited space on my device and I was wondering if the settings could be altered so only the due cards download onto the phone? Data usage is not a limitation. Thanks!
No, that is not possible. You could move some cards to a different profile that you don’t sync, but you’d need to export+import the cards when you wanted to move them from one place to another.
okay thanks!
maybe the developer fairies will leave this feature under my pillow one night 
its nice to have dreams.