I have seen many custom inserts for this game however I have yet to see one that supports the playmats, so I made one. This will support fully sleeved cards and vertical storage with minimal lid lift on the playmat side. I reviewed the early preview of the upcoming expansion from Gaming Rules and added some extra space to add the new cards that will be coming for the expansion. its a tight fit on the player board cards but theres just enough room that its not hard to get out. I did also make that card holder just a smidge longer than the resource bins to allow for taller card sleeves however please keep that in mind if you have card sleeves that are much larger than the cards themselves.