Multiple canvas

It would be amazing if we could have unlimited canvas inside Inkscape file. We could choose a couple of options:

1. How many extra canvas we could have inside our SVG or Inkscape SVG file.

2. We should be able to choose the direction: where would the 2nd, 3rd, and subsequent artboards/canvas be positioned in the screen in relation to the predecessor (or the 1st and main canvas). Like the 1st canvas is on the center of the screen and then the 2nd canvas is located in the right, the 3rd in the right, the 4th on the top....

3. Export canvas(or artboards)/layers/objects IDs as separate files.

All canvas would have the option to be independently named, configured on the size, dpi (or ppi) and other minor options.