Hmmmm, given the huge areas of public open space around the area (Kenley Common, Coulsdon Common, Farthing Down and Riddlesdown - which are all close to being contiguous - plus several other areas of woodland) I think the greater needs of the public are more than adequately catered for! Mostly thanks to the City of London Corporation who own much of the public access land hereabouts.
I've walked around the peri-track a number of times on weekday afternoons and evenings when SHGC have been active and I don't believe I've ever seen more than two or three dozen dog walkers, cyclists, runners and walkers...
Bloody NIMBYs!