-1 robbing is already nerfed.
Don't see how /rob is nerfed at the moment.
People can rob a bunch of cops by running around, robbing 4-5 cops, without care of getting arrested because they only lose the last amount they robbed, which is unfair (i.e. robbed 20k from cop 1, robbed 3k from cop 2, robbed 15k from cop 3, robbed 35k from cop 4, robbed 1 dollar from cop 5, then got arrested and only lost 1 dollar.)
People rob you while they shoot at you, which is dumb tbh, and even more so when they use keybinder to do it, because its unfair to others.
people carry like 40m in hand just to avoid taxes, the only downside is losing the occasional 35k when someone robs you. its fine how it is, any change will just encourage people to keep even more money in hand because of the lesser risk
There already exists a limit to withdraw from bank, which allows your money to get taxed. If your money is withdrawn, then its fair game and no deed was done since it went through the tax system. By no means should you be put on an extreme disadvantage because some people find methods to avoid tax.
My suggestion continues to allow players to lose the current amount they lose from getting robbed (35k or 50k), but it provides an even ground for all players to encourage more player participation in game and fun time.