Ability to select & rearrange invisible (switched off) layers and objetcs
It is incredibly annoying when I'm trying to group, move or rearrange objects or layers, only to be told by Illustrator that I need to turn visibility on before I can do any of this. Why?
In Photoshop I can move layers which are switched off with no complaints. It is a ludicrous process in AI to have to turn on a layer's visibility, move it, then turn it off again. And VERY annoying.