Would love the option to put the PC/system to sleep or shut down completely after a long render queue has completed. Often, when rendering a long list or animation, I have to leave the machine unattended and sometimes overnight, but don't want the PC to stay awake all night after the render has completed.
I have the same function/option in my P2P/torrenting software where it will put my PC to sleep once downloads are complete.
More of a work requirement for me, but could try locking your screen as an interim measure. The render queue will still process, but people wont have access to your computer and allows your monitors to go into power save mode. Obviously computer is still up and running, but might be a decent middle ground until/if they implement your suggestion.
I use apps like Airytec for that, but at least it would be nice for keyshot to calculate the total rendering time for the selected jobs, with or without accounting for the loading time or just estimating it in percentage