We already gather "FreeStorageSpace" from CloudWatch but we show it as percentage
instead of bytes
for better visualization. We will support setting a threshold on it via threshold profile
in our next update and it should be available in a week's time.
We already support major EC2 and RDS metrics, what other metrics you would like to see?
Additionally, what metrics you would like to see in DynamoDB, SQS, Lambda and EBS? Keep us posted, and we will add support for them in our future releases.