I think we all noticed that when ever a map has a low points reward players tend to not buy and to not defend at all anything, for its not worth the map, which makes the game very boring. I think it's pretty much self explanatory. I wanna suggest that when ever humans win on the map, all players with negative points will be refunded. In this way people will actually try and give their best on winning the map since, first all negative points will be refunded and, second they get to win some extra points on the map and achievements.