AimIsADickFinally a real use for that save state method! Personally I would use con_filter_text to ensure that random lines are not unintentionally written to the save file.
con_filter_text doesn't affect what gets logged, only what's shown in-game.
I could make it less likely for random things to get logged by putting all the save commands (~60 lines) into a single giant alias instead of executing them line by line, but that would kill all readability.
Over the past year or so I've been using it no random stuff made it's way there. Even if it did, the chance of it being something disruptive is extremely small imo.