In my work-in-progress version, I've added a border around the bottom domino face and moved all of the dominoes with zeroes to the back of the deck, allowing you to easily filter the dominoes down to function as a triangular deck. For example, looking at the last WIP version I shared, cards 0-54 could be a 1-10 triangular deck by looking at the upper (non-bordered) domino face. This was technically possible in 1.3 as well, but it wasn't convenient enough, IMO.
