Any open source project without a healthy ecosystem is always at jeopardy. Use something that doesn't require you to question NDA information from some company.

Chronosphere (https://chronosphere.io/) was recently started by ex-Uber engineers to build a commercial ecosystem around M3. M3 is Uber's metrics platform and isn't going anywhere. M3DB (the TSDB built to support M3) is becoming fairly integral to Uber in its own right. I'd say the trajectory is positive.

Disclaimer: I work on the M3DB team.