The game was not developed with hot seat in mind but I'll be looking into the possiblity of it since many players have requested it.
Terrain info is available via the ingame manual pages 57 and 60. More information may be added in the future in the form of tooltips and such.
Module rules are between pages 45 and 46 (indexed as b4,b5,b6 & b7 since they are sourced from a different booklet). You can just jump to page 45 and hit the next page button.
An option to wait for confirmation on dice results could become a feature somewhat soon but I only see it happening in the single player mode.
Wiggum, could you specify what you mean exactly by "victory hex"? Is it the outline for scenario objectives, or the one that follows the mouse cursor?
Camera speed setting is a good feature recommendation, I'll add it soon after things settle down with the technical issues.
Game sound modding is a bit of a tricky one, our engine does not allow easy injection of assets so this would have to be a long term addition if there is some traction for it. If you have the know-how, you could try replacing the files in the /lib/assets.jar file, it is essentially a zipped archive. Filenames and extensions have to be an exact match and it's likely that the steam client will undo your changes with each upcoming update.
Fog of war is a highly requested feature, unfortuantely we are not ready to deliver it short term but will be keeping it in mind for future updates. Can't promise anything just yet.