First off, this is really awesome.
I know it's still beta so I'm testing in my home lab, but I had some issues with some combination of R81.10 Take 55, this package, and DHCP relay. routed kept crashing and restarting and it broke my DHCP relay. I also wasn't getting CPU, Memory, Disk, data from cpview, so although some data was making it into Prometheus, the Grafana templates weren't working because the instance name wasn't recognized (also wasn't getting anything from system.os.configuration_info). More importantly though, DHCP wasn't working.
I uninstalled Take 55 and that got my DHCP Relay working again. cpview was also started displaying stats, but when I tried to start skyline it said the 'cpview -a' flag wasn't recognized. I figured something was wrong with skyline now so I planned to re-install it. The uninstall ran fine, but when it rebooted 'defaultfilter' policy was loaded and I had to console in. I tried cpstart and fwstart was failing. I decided to reinstall skyline and this is where I finally had success.
I'm still running R81.10 Take 44, but Skyline is installed and working, and so is my DHCP relay with routed stable. Production users take warning because this was a frustrating process with hard down scenarios. Not sure if this was Take 55, Skyline Beta Package, or a combination of the two.
Now, for my recommendation/request. I started using Zabbix for SNMP monitoring. Someone developed a Zabbix Plugin for Grafana that allows you to easily create queries in Grafana. You select the group, the host, the metric category, and the metric itself. It even auto-populates all the possible entries. From what I can tell in Skyline, creating your own graphs and queries is heavily based on query language and requires proper syntax. It would be nice to have plugin to help create these queries.