Yes, 'item.id' is cool, but it's not serial, and sometimes you need to iterate through items based on their indexes, trusting the indexes are in numerical order. When I need to get an item's id I need to use its name to loop through the entire project manager until I get a match. It just is so much for something so simple and it feels like item.index should be a thing, just like 'layer.index' is! Please!