U can actually do that anyways,put the people that wanna watch the game on normal slots(scourge and sentinel) and they can watch the game from one side's viewpoint without interfering with either sides economy,but those guys will get a hero and the starting gold,all admin/mod has to do is make sure they dont feed either of the sides and dont interfere with the game itself(in which case there should be some penalty for those who interfere,like a few days ban,ban on the la tour channel or something).That being said ,this is the simple option,and itd probably be better off only putting people mods actually trust with not interfering.Also theres the case when people on those slots leave the game,and give all the gold to the player that was on that team.Perhaps a bit risky,but as i said,its the easy way,and only some people should be allowed to watch games that way.