(Mod note: the first part of this post was split off into Fun fact about Fog of War in Shmeppy)
With that said, I am not interested in a dynamic fog system at all (especially if there is no mechanism to lock player control to specific tokens, which I’m also opposed to). To really make the most of it I think you also would have to define token-specific vision types/ranges, vision-blocking walls and obstacles, etc… which are exactly what I was trying to escape when I came to Shmeppy from Maptool. Being able to control what the players can and cannot see on a tile-by-tile basis is my responsibility as a DM and the occasional shift+right-click-drag is easy enough for me.