"Those figures are with the current system. The running costs - for those willing to go the route I'm suggesting - wouild go down dramatically if:
* Team can enter any GP they wish, say only the European part of the championship"
Taking this part of the equartion alone, there's the issue of sponsors. They are not going to pay the same for ten races as for twenty, after all. Furthermore, the race promoters are really going to be pleased, and willing to keep stumping up millions a year, when McLaren decide not to bother to appear at their race, or even Sauber, Force India, et al. Three car teams I'm not against, but to suggest F1 could survive with teams appearing as and when they want is a little far fetched. Furthemore, I suspect that, perhaps, four teams are in favour of three car teams; the rest have enough expense to worry about.