Allow to cancel, extend the subscription or skip the next payment massively to all customers subscriptions that have a product "X" (massively).
This would be a new functionality to be added outside the tabs we currently have.
This is definitely something we will look into longer term. On a related note, there is now a Developer API for extending subscriptions so it is possible to write a brief script to extend a batch of subscriptions. https://redirector.arcpublishing.com/alc/arc-products/arc-subscriptions/release-notes/arc-subscriptions-150-release-notes/#Developer-API-for-extending-a-subscription
You won't be notified about changes to this idea.
This is definitely something we will look into longer term. On a related note, there is now a Developer API for extending subscriptions so it is possible to write a brief script to extend a batch of subscriptions. https://redirector.arcpublishing.com/alc/arc-products/arc-subscriptions/release-notes/arc-subscriptions-150-release-notes/#Developer-API-for-extending-a-subscription