Right now we can create new Locations using the API V2.0. However, those are just "Regular" Locations/sub-accounts.
It would be hugely beneficial to have endpoints in the API V2.0 that allow us to enable SAAS Mode + configure the re-billing options (starting with Twilio & Mailgun). Also, give the ability to disable or enable a SAAS Plan. I personally don't enable SaaS Plans on any sub-accounts. I mainly just use SaaS Mode for the re-billing options.