How about adding the ability to set the server name in the configuration file and output placeholders to different servers using Redis. For example: server: lobby (in config) allows you to get a lobby server TPS from another server using %spark_tps_1m_lobby% or something similar. It would be very convenient to monitor several servers at once, and not connect to each one by finding out which server lags.

Out of scope for spark, and Redis is also the wrong tool for the job.

I suggest you check out https://github.com/Cubxity/UnifiedMetrics instead :)