Wimbledon isn't a patch on white city or the australian tracks and a new track is needed for the sport.
The track would need to be very wide like the aussie tracks and therefore 8 or 9 runner races could be held an inside an outside hare available for different races and although it would be wide, bank the bends as this makes for a safer track and better for the runners legs in competitions, also makes for a better viewing angle for the bends .
Would have to be built near the green belt so that its cheaper and doesn't clog up the city with traffic
If the bookmakers, exchanges and gbgb got together they could easily pay for it and it would put greyhound racing back on the map IMO