Gradually Stake may increase the requirement to diamond VIP rank, who knows! Now the requirement for getting a VIP host is Platinum 4 VIP rank, 2.5 million dollars wagering is required to reach that rank.
That means stake are friendly to the whales not with small gamblers we won't get a chance to have a VIP host we hope the same doesn't happen to the bonus system because this is one of the reasons we stay on stake. I suspect stake did this because of the increase in new VIP members so there is no other way stakes have to tighten the rules.