I think the solution for this is to offer staking-only to those people, so you can continue to collect staking rewards (minus the 10% commission) without being involved in the bankroll at all.
It will take me a while to implement the staking-only feature. Until I do, I won't drop the maximum offsite multiplier below 25x.
Couldn't you more or less implement this as a
negative offsite amount?
People who want to go back to the old situation with no offsite would need to put -90% of their onsite coins as their "offsite" investment.