I would like to be able to use the GET method with process integrations and access the body of the response later in the process to update the record or send notifications.
For example, in my organization, we have a request where our end users input their device's asset number and then the agent has to go in and relate the incident manually and copy out the serial number to put it in a custom field. If we could use a process integration to GET a CMDB object utilizing the asset, extract the serial from the response, update the record with it, and possibly even use another integration to relate the asset, it would reduce many manual steps.
It would be helpful for so many other processes as well, but I wanted to provide a simple example.