Sometimes there can be quite a few riders sitting at zero w/kg for my whole ride. It might be nice if you could click on a rider in the list and select “make invisible” from a pop-up menu to reduce clutter in the rider list. (I realize this may also be useful for other reasons…)
Another perspective on this is not to require clicking on riders during the ride (I find that pretty difficult when I am working hard and interacting with the program in any way, beyond a single key press, isn’t easy). Instead - or perhaps as an additional option - it can be a setting (“Display riders idle for > 30 seconds”, etc) for the program as a whole.