Would it be possible to have some sort of system that allows you to add a list to a token?
For example if playing 4E dnd you have various abilities that can be used once a day or once an encounter.
Could it be so that you can click on a token and add the abilities in a list, then as the abilities are used the GM or the player can go in and check a box that greys one of the entries on the list to show it was used. then the GM or player can uncheck the box when that ability is available again.
not exactly a must have but it could be useful in games where players have many abilities that are on cooldown for lack of a better word.