There is no need to apply any special and artificial points like IMPs. It's much better to count what is left after taxation from a simple formula 1000*B/(1000+B) where B stands for Balance for the Winners.       http://pikier.com/bridgewars/Roman/Thermes%20of%20Caracalla/index.htm

The same applies to VPs. It will be far more convenient to distribute 100% between both sides instead of 30VPs. Here goes the formula for the winners: 50+100*B/(1000*R+B) where R= the square root of the number of deals.Thus we need only a calculator and a simple formula instead of complex tables to count the match result.