Okay here’s a suggestion
Perhaps altering the way you pay out would help in that like they usually did at MGS casinos … they made sure anybody they were paying … actually had a legitimate reason for being there in the first place. In other words require players to prove they can deposit before you pay them, and that is an accepted standard with online gambling and ND bonuses because I know CR had that for years and probably still does.
I think as Rival’s grow they will probably see a lot of wisdom in the approach that the MGS powered casinos took … and perhaps they made some of their decisions based on the sheer numbers they saw … which I think Rival is in a position to fill.
it might scare off some of the worse of the bonus chasers (those experienced and that know to read T&Cs for things like that you have to prove you can deposit before you can get paid) but shouldn’t be a concern for the uninitiated since they will at some point need to cross this bridge to ever be able to be an asset to the casino instead of a liability.
ps.
I doubt that will be a popular thing because you will hear groins from those who would never have been anything more than a drain on your budget.