Adobe Generator: yes! but do not crop my canvas size (option)

Question

Adobe Generator= Is not there an option where I can maintain original canvas size position? ?
I mean: I love that the generator slices and exports each individual layer element into a single file .. thats good BUT..
but I do not want that the auto-cropping feature of export each single image into its exact dimensions >> I do want an option where you can maintain the original canvas size and element's position within the canvas space..    is that possible? 
GRAPHICALLY it is instead of this:  ///  I want an OPTION that automatically do this:
and we'll love that feature in Fireworks CC please !!!!

Answer 1

Silkrooster wrote:
I am not really seeing the need for it. If that was the case, it would make more sense to save the entire document.
There is plenty need for it. For one, not every project is a web site where CSS is even relevant. But if you have a large stack of icons, it is often incredibly inefficient to position them all individually with CSS instead of just exporting them as PNGs with matching dimensions. It also gives you better control over the scaling; for example, if you have 2px strokes that are going to be scaled to 50% on export, you want to align them to a 2px grid so they don't go fuzzy.
In my case I often need to export large batches (hundreds) of logos, which all need to be exported at canvas size and not trimmed to endless random sizes. The layer mask hack sounds like a lifesaver, but has plenty of shortcomings. It should be easy enough to add it as a simple parameter, and it would save a lot of time and hassle for a lot of users.