Hi @DonMarcocello, welcome to the checkmk forum.
Your suggestion is good but with a kinda dead python plugin for an enterprise software you can’t win a teapot. The restore process isn’t needed that often so it’s not the primary point I would start to speed up checkmk.
If you use the backup and restore functionality to build a test site you can try to let out the historical data (RRD and/or logs) via the command line options -N | --no-past for both or --no-rrd and --no-logs for either. You can also create the tarball without the compression via --no-compression which will speed up the process massively for the cost of storage.