Completely agree. The emails you get from LE are nice, but often not enough and hard to manage at scale. I created Certera to help manage LE at scale (helps with rate limits, has monitoring and alerting of expiring certificates as well as failure to renew), also helps with key storage and rotation. I'm hoping to keep iterating and adding more features and functionality. Think of it as PKI for LE certs.

https://docs.certera.io