fast board layout wish list
1-charging pads for attaching inductive or other chargers/power supplies without requiring the USB smart negotiatiation pins

2-super big USB port pads, through hole anchors, or drop in replaceabl USB similar to speakers or 3.5mm audio jack

3-extra USB ports on the board for future add ons, since you havde a SM assembly fab in .de add ons could be made later to solder down