RNG save scumming could be solved by saving the random seed. Doing that would mean that, if the player reloads and does the exact same thing, they get the exact same results. However, as some people have proven to me in other threads, people REALLY want their save scumming to remain intact, so I think there'd be a lot of opposition to that.
I like the thought but this really just leads to people determining the easiest way to advance the seed and then scumming that even harder. It's mostly a single player game so arguments being made on save scumming are kinda meh, but to generate a fun user experience you typically want to avoid circumstances that reward save scumming.
There are instances where this is not the case... Dark Souls comes to mind right away with the game being centered around failure followed by immediately being tossed back into the action with you (hopefully) having more information to work with.