Please please please add this functionality, as everyone says it would unlock loads of easy-to-use flexibility in what games on roll20 can be. I want players to have item cards without me needing to produce loads of images and without them having to break up play to look through their character sheets to figure out what the items do. I want to be able to shuffle index cards that we've written on. To give a specific use case for this, the marketplace has decks for Monte Cook Games's cypher system. Anyone trying to run numenera/cypher games may have noticed that the available cypher decks are frequently useless for this because they contain multiple cyphers per card and require a dice roll to set the level. So the player will end up having to write everything on their character sheet, defeating the point of using a deck of cards. If the player can just write "level 3, name of cypher" on their card then suddenly this product goes from useless to brilliant. I gather that in person users of these decks do this with wet erase markers - it's so painful that I can't do the equivalent with roll20! Being able to annotate cards would also enable loads of clever workarounds of the other issues with decks. e.g. I can't give cards to characters, only to players, and sometimes I have two people playing from the same computer. If they can annotate their cards, we can track which characters own which cards.
