As of now, they perm ban accounts which RWT. Anything 'different' would have to be a step towards less punishment. Sounds like Jagex is transfering their approach to bots to their approach to RWTers: Wipes.
We are also looking into new ways of punishing cheaters who buy gold
Right now, if I buy 10M gold for $20, I risk not only that $20, but also my account that I've put 100+ days into. But if Jagex goes to bank wipes, then all you're really risking is that $20. WAY less risk will lead to far more RWT, not less.
Note - I say "I" as an example. I have never, and will never endorse RWT or anything similar. It is the scum that ruined the game and offenders don't deserve to play, ever.