We (The GCP Ops Management and Stackdriver teams) are working hard in multiple fronts to deliver innovation (Such as service graph highlighted in day 1 keynote at Next and GKE monitoring) and at the same time deliver first class scale and reliability. its a journey, but we have made a lots of improvements over the last 12 month, and will continue to raise the bar in the next 6-12 month. We have many very large customers as well as startups using Stackdriver as the core of their Ops and SRE command and control center. I can personally guarantee that our users getting great UX and reliability is top of mind for the entire team. I would appreciate it if you can flag to our team any time you see a page not found or any other experience in Stackdriver that you feel does not meet the bar - we listen and we will resolve bugs one by one to meet your expectations. we have an email list, bug tracker and a feature request forum all listed here
https://cloud.google.com/stackdriver/docs/contact-us . you can also submit in context feedback from the Stackdriver and GCP consoles which will be reviewed by the team. finally, please feel free to DM me on Twitter @markcartertm . We care deeply and would love to hear and respond.