Group metered billing with all invoices.
I love that you guys just released metered billing. I was JUST about to go through a long process into migrating to Stripe but this just kept me as a customer.
However, I really think there should be a requirement to group ALL invoices regardless of frequency or metered/flat charges. It really doesn't make sense for our customer to be always be spammed with invoices when the idea of Subscriptions is partially a "Set it and forget it" model.