I agree with the other users above, Diamond level will be quite high requirement for a VIP host. They may apply a certain amount of wager requirement to every user who has a VIP host, the wagering will be needed to continue with the host on the next month. Stake has already hired a good number of hosts, and there are also a good number of Platinum IV+ users who doesn't wager anything significant for a long time. They can reduce the load from the host by applying wagering requirements every month.
I've heard here that to keep a VIP Host they have to wager $50k per month (I forgot who said it) well, that means it's been implemented. What I said is not in the near future but maybe in the next 5-10 years who knows. For me it's not that important because I don't expect to have a VIP Host you know $50k would be a burden since I don't have a specific budget for gambling just rely on the sig campaign

It looks like this june stake.com has a lot of promotions and bonuses for active users. Did you know this information before?
Do you think there will be any good surprises from the stake this june?
Specifically they do not guarantee that every account will get the offer/promos this means there are criteria to get it.
On the other hand I think the promo mentioned is available on the home page like Stake vs Eddie, Level UP, Conquer the Casino and more
What we are waiting for is August related to the annual celebration.