Have the ability for Product Subscriptions & a Customer Portal to self-manage subscriptions (add/remove items, update quantity, update delivery schedule, update delivery address, update payment information).
Providing different purchase options to get a "variable quantity" (dropdown selector) of a product delivered every "variable timeline" (dropdown selector)
(Ex: 2lbs of coffee every month)
I'm hoping to switch multiple ecomm clients over to 2.0 from other platforms and this sort of feature would assist me in justification.