I Think the Developers have failed to understand that, this is the MOST IMPORTANT feature one needs while designing.
Sadly I still use my old Coreldraw version 16 despite loving and purchasing AD.
either, They dont understand the importance or just cant do it with their layer management system we all love.
If thats the case, the moderators should come out and lock this post saying sorry guys its 6yrs we couldnt do it, we tried and tried, but looks like this feature can never be implemented.
And then Close this thread for good!