I've seen MANY requests around these with a ton of upvotes between them.
Many of us seem to need to be able to CREATE, SCHEDULE, END, or PAUSE subscriptions via a GHL Automation Action (not trigger) or via the API.
We'd also like the ability to have a way to use the API or Automations to update the CARD ON FILE for a Subscription. The Customer Portal doesn't allow us to integrate our service delivery into it, and having a seperate login for that isn't feasible because people get confused about the multiple different login credentials. There is no way for us to Log someone in with an iFrame or API call, so we don't use it.
Currently, because we can't manage subscriptions automatically we've had to start offloading our subscriptions to a Non-GHL Integrated provider that can support this. However, we'd prefer all of our subscriptions to exist in GHL.