A nice feature of KSysGuard (the legacy one) was the ability to have the CPU column normalised by the total number of cores.  Thus, a process using all of one core would register as 100%, and using two cores would show as 200% etc.  This is quite important to help detect run-away processes on high-core count systems.  When you have 64 cores a single run-away process barely registers (1.5%) in the list, and yet can be trashing your power consumption.

Allowing the column to be re-normalised as an option would resolve this issue since such a process would now register at 100%.