This system was implimented at first due to unscrupulous practises amongst players. Nevertheless, this has lead to other problems such as allowing weaker players to enter the round of top 4 during the 7th round. Personally I would prefer the 11th round system considering that this sytem benefits the stronger players and would induce stronger players to take more risk. Moreover, there would be less "black horses" involved. For players that take more risk, it is obvious that the 11 round system would suits them better. Anyway, regardless of whatever system used. It will never be a perfect system that would suit all players.