As it stands now, when you switch to another map and open the Initiative Tracker it wipes the previous map's initiative order from the Initiative Tracker. It would be greatly beneficial to the GM if each page had it's own static Initiative Tracker box.  This would allow the GM to preset some initiative orders ahead of time.  This would reduce the amount of time that the GM is behind the green curtain setting up a new initiative order on another map, and it would speed up the flow of play. I run a 6e HERO System game and play in a couple as well.  In the HERO System characters have multiple phases in a turn and in order to represent this in the Roll20 Initiative tracker we have to input anywhere from 2-5 entries for each PC/NPC to represent their actions in a single turn.  As you can see, this can become very cumbersome when you have a lot of PCs and NPCs on a given map.