[Footnotes/Endnotes]

also voting for footnotes and endnotes. 

in my opinion it  is a absolute must have feature! 

[isolate artboards from layers]

i think you have to isolate the artboards from the layers completely. so there will be the possibility to edit objects simultaneously on more than one artboard. for example i can chance the color of many different objekts on many different artboards, if they are all on the same layer.