Having been a DM/GM/Storyteller for the last 30 years, one of the things that I need to run my games are notes. While the character files, the handouts have a GM only notes section. I like to have something I can refer to in order to make sure that the game is staying on track, where the players have been, where they are going, what they haven't done and what they need to do. My suggestion, is like the Character files and handouts, that there be a blank file that can be created to put notes, possibly with check boxes, radial dials and outlines. This would make it easier for GMs to consolidate information and work of off during the game.