"We are not removing the possibility to pay with Steem nor using the fund of players for something else then giving a value to the FUTURE token."
Giving a value to FUTURE token by using the Steem in the Rewards Pool that players were expecting. That literally doesn't even make sense. You are creating FUTURE tokens from thin air, "buying FUTURE tokens" with Steem from the Rewards Pool doesn't somehow give FUTURE tokens value.
Allow the Rewards Pool to be drained over time and the Steem payouts to happen like was implicilty and explicity promised to happen.
The same concept applies to the Steem blockchain. If the witnesses all of a sudden conspired tomorrow and took the entire Rewards Pool of Steem for themselves, and started issuing FUTURE tokens people would not see that as "the possibility to obtain better price with it".