I must say, the new system monitor is great. It didn’t automatically install with the Tumbleweed updates (as expected) so I installed it and I like it much better than the KsysGuard application, I assume it replaces. There certainly are a lot of great little tweaks in 5.21. Although the Breeze Twilight doesn’t personally interest me, I think it should be the Plasma-wide default. It is, most certainly, the best of both worlds.