Use case or problem
This way it will be possible to build a navigation system of large wide canvases and/or the way to decompose them. Some kind of graph document scrolling function, by analogy with ordinary text document scrolling.
Proposed solution
Add the ability to create links between blocks of any type on the canvas of the “Portal” type. Portals can has 1-way or 2-way type. (or even N-way type, why not?!)
From canvas block A to canvas block B in this .canvas file or another.
When you click on block A (or link itself), you jump to the canvas position where block B is located.