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

Sorry but you are wrong. Having to wager 50k in only 1 month would be kind of a hurdle I think. You have to maintain 50k wager over a 3 month period, that what they implemented like 6 months or so ago. And if you fail to make this happen you have the chance to get your host back once you wager 30k in a month AFTER you lost your host, this will give you this feature back actually.

If they would actually go to what you said, 50k/month I think many players would lose their host quite quick.