@Jakro nice! It just finds the closest alignment axis depending on edge angle? I can see that being really useful! Here's another gif that shows the use case of my script better I think. I find it particularly useful when working with tiling textures and trims, to align stuff:
Hey! I think you guys may find this useful for lightmapping scenes: https://gum.co/Batch_UV_Operations_Blender This adds 3 simple operations for multiple object UVing. It lets you sync / set / create the active UV map, delete and set as active render map. Hope you guys find this useful! it's free