I can't model a tray with less than a 25mm tall sidewall and when running down a wall and turning, the dimensions get all screwy as the open face always needs to point upwards, this is far less than ideal. There are a variety of things that design tray just will not do which makes it quite unrealistic and impossible to accurately quantify, not great for installation detail models.
Can we have a tool to convert native Design Element Tray into Fabrication Items please, lets not let the mechanical team have all the fun!