Just installed my vue yesterday, fantastic hardware and setup for the price. Even the most basic of APIs would be extremely helpful. Getting the data into influxDB and then onwards to homeassistant or grafana or numerous other things would allow for power alerts, better analytics, better cost savings calculations, etc.
A lot of this exists for iotawatt already due to its open nature, but the vue hardware is cheaper, and the system overall is more streamlined in my opinion