Hey Alex! Nice of you to get in touch!
Well! I have actually bought and played around with the plugin yesterday and today. I am missing som features that I also mentioned in your thread.
I wanted to use it as a design platform for a t-shirt costumizing store. But i would like to connect the different modules that i can add to the canvas to my db. Limit the amount of things you could add to the canvas and also limit the size of the different things on the canvas. In that way I could sell a, let say “small print” 10x10 cm, and the user would then be limited to the space defined.
Im also missing a background image, that the user cant delete or resize. So that i can put a tshirt template inside, if you catch my drift.