1: Allow the canvas object to save as an image file.
2: Allow canvas to load images from file.
Yeah this is a good idea IMO... could really open up some possibilities for things like random backgrounds, progressive battlefields that remember your previous "battles" etc etc.
You can save images from a canvas by using the image manipulator object. Simply use the image manipulators function 'copy image from sprite' and select the canvas. Then use the action 'save png image'.
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Huh. Well what do you know... Okay well I got the saving to work. but how about pasting it to the sprite? Is that possible too? With "Copy to sprite"? Because I keep crashing whenever I try it.