Nick at IDICBeer has kindly tested the objective markers, and suggested I add an 'X' one, to mark the objective with no value. So here is an updated sheet.
I have also added a two-sided night fighting token: simply glue the two tokens back to back (or glue them on either side of a 40mm disk).
The idea is that by having the token on the table at the start of the game, the players won’t forget to roll for night fighting. If night fighting does happen on turn 1, place the token moon-side up, and discard it at the end of the first turn. If there is no night fighting, place the token sun-side up. Ideally you then won't forget to roll again from turn 5. It's certainly not foolproof, but might help a bit.