This would also potentially cut costs since there would be 60 rather than 90 points per match to pay. In reality, the £/point would just rise to offset the fewer points actually scored. I like the idea though.
All of which are due to fouls/transgressions etc by the opposition, whereas the joker is purely and simply a reward for not being very good. Aptly named and has no place in a professional sport.
Who are 'we'? Putting that aside, there was never any chance of a permanent track at either of those venues. Don't forget that even Wembley was a temp. track after 1956.