It's just a game, it's better than nothing, and SD is nice at the end, adds some spice to the flavour, if you are worried about being owned next turn, gotta try harder early in the game next time
It would be nice if we could find a perfect scheme, but quite a few of us have tried MANY different ways, and can't agree on anything, people either complain the maps too easy or the schemes 2 flawed, theres no happy middle because everyone has their own opinion of what makes a perfect roper game.
So I guess the reason why it's stayed like this is because so far no one has came up with anything better.