There have been a few people want fog of war to be completely disabled. My ideal solution to make them (and me!) happy would be a campaign setting for fog of war with options of "none", "current map only", and "all maps" where the first option would not have any history and the last option doesn't clear FoW when a token leaves a map (nor would it reset when the token gets dragged onto the map).

The right click option to clear FoW would still allow clearing the history if the DM wanted to reset it on a map for some reason, I think? I haven't played with this for a few weeks, so I might be misremembering that part.