Subscriptions: Charge only when shipping!
Would love to offer subscriptions and only charge when the shipping occurs. I know this is possible with some gateways (Authorize.net CIM, Braintree, probably others), but not yet possible with the Subscriptions extension.
So, for instance, we run a wine club that ships twice a year (Spring and Fall) but not on a set date. It's seasonal and depends on various factors, and would like to charge when shipped.