I think there is likely to still be just as large of a personal variance in the rate that lisdexamphetamine is cleaved into the active metabolite, so the same problem arises.
I think anything that delays the active metabolite from taking effect technically dampens the addictive potential; the longer the better. I also think it’s unlikely to really solve the problem though tbh. People can still tell what’s causing how they feel when they start a new medication.