Show units/seats on upcoming subscription billing/invoice

Currently, if you update a subscription with the “proration-charge” behavior, the “units” does not change in the API response. This is due to “units” only updating once a successful payment has been made.
(The updated/future/requested units is visible in the webhook that fires upon updating the subscription though)

Request 1:
Add a field when getting subscriptions that shows “requested_units”, “upcoming_units” or something similar to the response when updating and and getting a subscription.

(Bonus) Request 2:
Add this information to the CustomerPortal-component, so that when the customer goes to their Portal, they can see what their next subscription cost will be to increase transparency and clarity.