As one of who showed disagreement, my main concern is there is no explicit usage of illiquid rewards, which consists of 50% of total payouts. SteemSports is very innovative service in terms of utilizing voting power for entertainment, but if all SP rewards are given to the owner as a profit, it can be a very easy way to monetize supporting whales voting power into one's income.
If there is reasonable distribution/use plan about VESTS of steemsports, I am not against their free play games.