– KiKit is a panelization utility that supports panel fiducials (alignment markers.) (EasyEDA and Altium have a built-in panelization UI.) The KiCad fiducials key is “F”.
– there is a component table for bulk mgmt. of parts
– use “X” icon for marking pins as No Connect, otherwise DRC will emit errors
– there is a high-frequency creepage plugin that is 2D (Altium has a built-in 3D creepage checker)